51 results about "Meteorite" patented technology

The invention discloses a method for analyzing and forecasting reentry meteorite of a spacecraft. The method comprises the following steps: (1) analyzing the structure of the spacecraft and constructing a disintegrated three-level model; (2) calculating and analyzing aerodynamic force, aerodynamic heat and flight characteristics of the system / subsystem level and the component level; (3) determining system / subsystem level disintegration criterion parameters and condition boundary parameters; (4) calculating and simulating the hierarchical flight path of the system / subsystem; (5) calculating, simulating and analyzing system / subsystem hierarchical structure disintegration and destruction; (6) determining a component level disintegration criterion parameter and a condition boundary parameter;(7) calculating and simulating a component level flight path; (8) calculating, simulating and analyzing the disintegration and damage of the hierarchical structure of the component; (9) constructing afragment / particle-level block strip model; (10) analyzing spacecraft fragment survivability and simulation calculation condition boundary; (11) carryin gout fragment / particle level aerodynamic forceand flight path calculation simulation; (12) fragment / particle hierarchical falling area analysis and evaluation; and (13) ground risk assessment.

The invention discloses a meteor crater detecting method based on bright and dark area pairing, relates to the technical field of image processing, and aims to solve the problems that the conventional meteor crater extracting method based on a landmark navigation task in a planet landing section is high in mis-extraction rate and hard to detect irregular meteor craters, and the like. The method comprises the following steps of: carrying out primary detection on an image obtained by an optical camera during the planet landing process based on a maximum stable extreme value area method; extracting shadow areas and bright areas in the image; deleting overlarge or oversmall areas; taking the moment center of each detected shadow area of the meteor crater as the center; searching the bright areas within a circle with a R radius, wherein the difference of gray level average values of each bright area and each shadow area is larger than a given threshold; calculating a vector from the moment center of the shadow area to the moment center of each bright area; and calculating an included angle between the vector and a projection vector of a sunshine vector in a camera image plane, wherein if the value of the inclined angle is less than a given threshold, a meteor crater is formed by the shadow area and the bright area.

The invention relates to a meteorite glaze for building ceramic and an application method of the meteorite glaze. The meteorite glaze belongs to raw glazes and comprises raw materials as follows: clay, potash feldspar, albite, quartz, dolomite, limestone or calcite, calcined talc and zinc oxide which are commonly used in the field, as well as three of more of nano calcium carbonate, nano strontiumcarbonate, nano barium carbonate, spodumene, transparent microcrystalline glass powder, plate-shaped corundum powder and dry-grained microcrystalline frit, and a wear-resistant ceramic tile product is obtained by ball milling, sieving, glazing, drying, firing, polishing, edging and waxing. The meteorite glaze adopts a simple production process, and is convenient to apply and suitable for industrial scale production, thereby having good application prospect.

The present invention relates to a cosmetic composition comprising a meteorite extract. The present invention also relates to methods of using the extract as a cosmetic agent suitable for stimulating the differentiation of human keratinocytes.

A spacecraft fragment meteorite landing area forecasting method comprises the following steps of establishing a basic pneumatic database according to a current spacecraft to be processed or fragment,wherein the basic pneumatic database comprises a basic static pneumatic database and a basic dynamic pneumatic database; storing aerodynamic force and torque data corresponding to the flight conditions in a basic static pneumatic database; storing pneumatic derivative data corresponding to the flight conditions in a basic dynamic pneumatic database; obtaining the real-time aerodynamic force data through interpolation from the basic static aerodynamic database, obtaining the aerodynamic derivative data of corresponding conditions through interpolation from the basic dynamic aerodynamic database, and obtaining the real-time stress data of the spacecraft or the fragments through calculation; and performing six-degree-of-freedom trajectory simulation according to the determined real-time stress data of the spacecraft / fragment, determining the meteorite trajectory of the spacecraft or fragment, and further determining the meteorite region of the spacecraft or fragment.

The invention provides a meteor crater mismatching determination method based on ratio of shaded area to external-contour area, and relates to the technical field of image processing, solving the problem of mismatching of conventional meteor crater extracting and matching method. The meteor crater mismatching determination comprises the following steps in sequence: selecting a meteor crater pair from the meteor crater pairs which are given the matching; calculating the altitude angle Theta of the sun at the image shooting time based on the ephemeris; calculating the ratio SR of the shaded area to the external-contour area, from the three-dimensional topography, of the meteor crater according to the three-dimensional model of the meteor crater and the altitude angle Theta of the sun; calculating the ratio S' of the shaded area to the external-contour area, from the image shot during falling, of the meteor crater; and if the absolute value of SR-S' is more than a given threshold, determining that the selected meteor crater is subjected to mismatching. According to the meteor crater mismatching determination method based on the ratio of the shaded area to the external-contour area, the mismatched meteor crater is removed from the meteor crater pairs which are given the matching after the matching between the meteor crater in the image which is shot when a lander falls and the meteor crater in the planetary three-dimensional topography is accomplished, and thus the accuracy in matching of the meteor crater can be improved.

The invention discloses a filling and mining trapezoidal lane-side support body which is characterized in that the cross section of the lane-side support body is a right angle trapezoid and gangue from coal mining or sorting is used as a material. The construction process for trapezoidal lane-side support body comprising: building a trapezoidal gangue wall, fixing anchors and metal meshes, and spraying the concrete layers. The trapezoidal lane-side support body can provide the active lateral support force on the oblique side while supporting the roof and closing the goaf. The method effectively weakens the lateral deformation of the side support body, the strength of the support body is large, the stability of the roadside support body is maintained, and the recovery rate of coal resourcesis improved. The construction process is simple, meets the requirements of safe construction and production of coal mine filling, effectively improves the strength and stability of the roadside support body, improves the coal resource recovery rate, consumes meteorite waste, protects the environment, and meets the requirements of green mining.

The invention discloses a cultivating method for ocean red corals, and aims to overcome the problems that the as the red corals are extremely precious due to the fact that special conditions are required for the red corals to grow, yet as the demand on the red corals is gradually increased, the red corals are destructively extracted, then the red corals are bound to be extinct if no scientific technology is introduced for the growth of the red corals. Clay, meteorite ash, root powder and volcanic soil are prepared into a red coral cultivating substrate for the artificial cultivation of the red corals. After 5 to 20 year cultivation on the seabed, unexpected effect is achieved; the red corals can be seen sprouting out of the original coral roots after three years, and the red corals can fully grow after ten years, and the red corals are glittering, elegant, beautiful and bright-colored.

The invention discloses a space target meteorite forecasting method suitable for a space environment disturbance condition. The method specifically comprises the following steps: T1, counting ballistic coefficient results of the meteorite target under different space environment conditions in history, and establishing a ballistic coefficient corresponding table; T2, determining the orbit of the meteorite target, obtaining the position and the speed S0 of the space target at the end point of the data arc section; and T3, carrying out meteorite time and drop point prediction. The invention relates to the technical field of spaceflight measurement and control. According to the space target meteorite forecasting method suitable for a space environment disturbance condition, a reasonable ballistic coefficient can be selected according to disturbance conditions of a space environment at different forecasting moments; and the atmospheric resistance acceleration is calculated, so that the atmospheric resistance modeling error can be greatly reduced, the problem of low meteorite forecasting precision caused by relatively large atmospheric density modeling error in a space environment disturbance period can be solved, and the influence of the atmospheric density modeling error on meteorite forecasting in space environment disturbance is reduced.

The invention relates to activation energy ceramic and a preparation method thereof. The activation energy ceramic is prepared from the following raw materials in parts by weight: in a blank, 6 partsof meteorite powder, 3 parts of rare earth powder, 9 parts of volcanic rock, 16 parts of agate and 10 parts of medical stone, and in a glaze, 8 parts of bovine bone, 8 parts of plant ash, 26 parts oflocal glaze stone, 40 parts of black glaze stone, 3 parts of iron ore, 18 parts of cooper ore and 13 parts of deep-sea mineral salt. The activation energy ceramic can be used for adsorbing a heavy metal ion in water, and is used for releasing multiple mineral substances and trace elements, which are beneficial to a human body. Meanwhile, a product is combined with that the calcination, by a liquefied-gas kiln at present, of a jun porcelain becomes a main trend; the defect of liquefied-gas calcination is overcome; a temperature is slowly raised; the defect caused as the temperature is raised too quickly is avoided and the defect that a kiln transmutation effect is generic as a sintering time is too short is avoided.

The invention provides a differential interception tracking method based on a space object orbit error. The differential interception tracking method comprises the steps: S1, determining an interception tracking trajectory according to theoretical orbit parameters of a target space object; S2, determining the in-advance interception tracking time and direction according to the orbit forecast error of the target space object; and S3, iteratively determining the differential interception tracking rate so as to ensure that the differential interception tracking can cover the orbit forecast error range, and completing the differential interception tracking based on the space object orbit error. The method can effectively alleviate the technical problems of overlarge guide precision deviation, low tracking observation success rate, influence on meteorite falling forecast precision and the like when a specific target is tracked and observed in the prior art.

The invention discloses an asteroid surface optical navigation road sign evaluation selection method, is especially suitable for a navigation system which uses meteor craters as road signs to autonomously determine the position and the attitude of a deep space detector and belongs to the field of autonomous navigation. The method is characterized in that the image processing algorithm is utilizedin navigation camera images to detect and extract the asteroid surface meteor crater information; elliptic fitting and meteor crater center positioning are performed on the detected meteor crater information; a fitted elliptic equation is utilized, according to the uncertainty propagation characteristics, an error covariance matrix R of the meteor crater is obtained, and error elliptic long and short half axes a and b describing the uncertainty of crater errors are obtained as indexes for evaluating the observation quality of the meteor crater. The accurate and feasible positioning road sign autonomous selection method is provided for the deep space detector, the best navigation road signs are selected, so accuracy of navigation road sign selection of the deep space detector is improved, and thereby navigation accuracy of the position and the attitude of the deep space detector is improved.

The invention relates to a meteorite water purification device, and belongs to the field of health drinking water equipment. According to the meteorite water purification device, meteorite is broken into particles with an appropriate size, the meteorite particles and aluminum-magnesium alloy particles are mixed into a micro electrolysis high-energy composite material, the high-energy composite material containing the meteorite particles and the aluminum-magnesium alloy particles is loaded into a meteorite micro electrolysis energy tank, and finally assembly is performed to form the meteorite water purification device; and a water inlet pipe is connected with a tap water pipe, and tap water sequentially enters a PP cotton filter, an active carbon filter, an ultra-filtration membrane filter, a micro electrolysis meteorite energy tank and a rear-laying active carbon filter, and finally flows out from a water outlet pipe. The meteorite water purification device of the present invention has the following beneficial effects that: the meteorite is used as the high energy source of the water purification device so as to substantially improve the health drinking water equipment efficiency and the effluent quality, provide positive energy for human health drinking water, and substantially improve the life quality and the happiness index of users.

The invention relates to a Jun porcelain wine bottle capable of improving the mellowness of Baijiu and a preparation method of the Jun porcelain wine bottle. The Jun porcelain wine bottle is preparedfrom the following raw materials in parts by weight: blank materials: 20 parts of potassium feldspar, 10 parts of red feldspar, 10 parts of calcite, 10 parts of quartz, 3 parts of frit, 3 parts of copper oxide, 2 parts of tin oxide, 5 parts of Benshiyue and 3 parts of Nanpo hard soil (mainly containing silicon dioxide); outer wall glaze materials of a bottle body: 10 parts of melilite, 5 parts ofquartz, 2 parts of talcum powder, 5 parts of beef bone meal, 5 parts of fluorite, 0.5 part of copper ore, 6 parts of alkaline stone and 3 parts of Hunan Leiyang soil; inner wall glaze materials of thebottle body: 35 parts of Yushan red feldspar, 8 parts of calcite, 3 parts of meteorite powder, 10 parts of volcanic rock, 10 parts of medical stone, 1 part of zinc oxide and 2 parts of tin dioxide; the Jun porcelain wine bottle can release various beneficial mineral substances and microelements beneficial to human bodies and has very good social and economic benefits.

The invention provides vermiculite energy ceramic and a manufacturing process. Generally, the vermiculite energy ceramic comprises raw materials such as a blank and a glaze, wherein the blank comprises kaolin, talc and rare earth powder; the glaze is prepared from the following raw materials in parts by weights: vermiculite powder, potassium feldspar, light calcium carbonate and barium carbonate.A vermiculite energy dark-red enameled pottery prepared from raw materials such as vermiculite powder and purple grit mud can be obtained. The manufacturing process comprises pretreatment of vermiculite (or treatment of other raw materials), green body (or combined glazing) and firing. The vermiculite energy ceramic is prepared by adoption of vermiculite and other natural materials, and is capableof releasing negative ions, far infrared rays and magnetic fields, activating water molecules, so as to enhance the water solubility and penetration, decompose harmful substances in water, adsorb odor in water and enhance the activation and solubility of water and improve the body immunity, and absorbing heavy metal ions in water at the same time so as to release a variety of beneficial mineralsand trace elements.

The invention discloses a method for preparing meteorite liquor, which mainly comprises the steps of hydrogen explosion treatment of meteorites into powder, and then making filter elements together with meteorite powder and activated carbon according to a conventional method, and then activating the liquor through the filter elements. Compared with the prior art, the present invention hydrogen-explodes the meteorite into powder, and the surface area in contact with the liquor is increased by more than one million times, so the activation speed is rapidly increased, no soaking is required, and high-efficiency continuous production can be carried out. Meteorite powder and activated carbon have a synergistic effect after being mixed together. The microporous structure of activated carbon reduces the agglomeration effect of meteorite powder and expands the surface area. In addition, it can activate the wine body while filtering out odor impurities in the wine, killing two birds with one stone.

The invention discloses an ultralow heavy metal dissolution and low radioactive meteorite ceramic and a preparation method of the ultralow heavy metal dissolution and low radioactive meteorite ceramic. The ultralow heavy metal dissolution and low radioactive meteorite ceramic is prepared from the following components of 0.3-43% of spherulite-free calcium meteorite, 56-95% of purple sand, and 1-5%of clay by mass percent through the steps of selecting the materials, grinding, mixing, pugging, fossilizing, pugging back, forming, drying, bisque-firing and sintering, a processed composite ceramichas the advantages of high sintering rate, ultralow heavy metal dissolution and low radioactive level, is safer to use due to the ultralow heavy metal dissolution and the low radioactive level, the secondary treatment does not pollute the environment even if the ceramic is broken.

The invention relates to a spacing-filling gob-side entry retaining method for treating dinting gangue. The method comprises the following steps: (1) supporting by adopting a bolt mesh anchor or no supporting according to the roof condition of a filling area along with the backstopping of a working surface; (2) constructing a roadside packing body behind a hydraulic support, and reserving a space with 2-4mm in length and without filling according to the roof condition after the roadside packing body is constructed to a certain length; (3) after a gob-side entry is stabilized or a certain distance is reserved behind the gob-side entry along with the propulsion of the working surface, piling up the gangue generated by bottom clearing of a bottom heave of a roadway and bagged by woven bags or snake leather bags in the space of the roadside packing body, so as to achieve the roof supporting and goaf sealing effects together with the filled wall body; and (4) repeating the above steps to form a continuous roadside supporting wall body for mining a next working surface. By adopting the method, high-water materials can be saved, the entry retaining cost, the subsidiary transport expense caused by dinting and the labor intensity are reduced, and the gangue can be treated and utilized.

The invention belongs to the field of porcelains, and particularly relates to secret-formula porcelain glaze for a Ge kiln and a firing method of the secret-formula porcelain glaze. The secret-formulaporcelain outer glaze for the Ge kiln is prepared from the following raw materials: 25-32% of Huangshixuan glaze soil, 19-25% of Xiyuan glaze soil, 15-18% of agate powder, 20-24% of limestone, 4-6% of potash feldspar, 2-3% of purple gold soil, 0.6-0.9% of meteorite powder, 1-3% of plant ash and 2-5% of rosewood powder. Compared with the conventional formula, the formula of the invention has the advantages that the amount of the Huangshixuan glaze soil and the amount of the purple gold soil are slightly less, the jade texture of a glaze surface can be enhanced by adding a proper amount of theagate powder, and the glaze surface is glossy. A trace amount of the meteorite powder is added, so that the formed porcelain product has an effect of softening water, and moreover, tea astringent taste in a beverage can be removed. Due to addition of the rosewood powder, the fired product can retain slight taste of wood, and thus, the grade of the product is improved.

The invention discloses a frequency-spectrum underwear which is in a layered structure and comprises an inner layer and an outer layer. The outer layer is a fiber fabric layer; the inner layer is a natural meteorite layer. The frequency-spectrum underwear adopts the wide frequency spectrum design, and the frequency spectrum of the frequency-spectrum underwear nearly covers the frequency range of all the tissue cells of the human body and can ensure that the human body can generate the beneficial physiological and biochemical reactions so as to achieve the healthcare and treatment effects. In addition, due to the design mode, the frequency-spectrum underwear can play a role of shaping the human body.

The invention discloses a meteorite functional drink. A preparing method includes the following steps of S1, preparing activated water containing meteorite; S2, preparing fermented fruit juice of pineapple and roxburgh rose; S3, preparing fermented vegetable juice of broccoli and wild cabbage; S4, mixing the activated water containing meteorite, the fermented fruit juice and the fermented vegetable juice, filling a sealed container with the mixture, and transferring the sealed container with the mixture into an ultrasonic cleaning machine; S5, conducting sterilizing treatment, conducting cooling until the room temperature is reached, conducting filtering 2-4 times, removing filter residues to obtain filtrate, adding potassium sorbate, vitamin C and citric acid to the filtrate to be evenlystirred and mixed, and conducting sterile filling to obtain the meteorite functional drink. The meteorite functional drink is good in taste, rich in nutrient, high in healthcare function, lasting in flavor, beneficial for human body health, easy to absorb and good in synergistic effect, is deeply loved by costumers, promotes the digestion, and meanwhile can make a human body discharge toxins of all body parts in time.

The invention provides a method for manufacturing meteorite glass. The meteorite glass is manufactured by the following steps: prepared glass meteorite paint is evenly coated on the surface of glass, a PET film which is kneaded into a texture shape is paved on the surface of the glass meteorite paint to ensure that the glass meteorite paint flows with the texture on the PET film, 2 to 3 times of glass brighteners are evenly sprayed on the surface of the meteorite paint which forms the texture shape after natural solidification and drying, then a pearl powder solution is sprayed, the glass meteorite paint is baked for 2 hours in a baking oven with a temperature of between 60 and 70 DEG C, and finally a colorless varnish is sprayed for bottom sealing. The method adopts a process different from that of the prior meteorite glass, particularly the different preparation of the pearl powder solution and the more reasonable control of the baking time, thereby ensuring that the meteorite paint and a glass structure are closer, the brightness of the surface is higher, the refraction effect is good, a meteorite paint layer can not fall off after being placed for a long time, and the brightness and the refraction effect can also not be changed.

The invention relates to a meteorite multifunctional organic fertilizer and a preparation method thereof. The organic fertilizer is prepared from the following raw material components in parts by weight: 800 to 850 parts of organic material, 50 to 100 parts of calcium magnesium phosphate fertilizer, 1 to 2 parts of bactericide and 10 to 15 parts of meteorite powder. The preparation method comprises the following steps: weighing the raw material components according to a ratio, crushing and / or chopping and evenly mixing the raw material components except for the bactericide, and adjusting the water content; adding the bactericide and then evenly mixing to obtain an inoculated mixed material; carrying out compost fermentation, and drying, crushing and sieving to obtain an organic fertilizer.By creatively using the meteorite as the raw material component of the organic fertilizer, the meteorite multifunctional organic fertilizer directly acts on crop roots by virtue of a large amount ofbeneficial trace elements, dark matter, dark energy, and vibration frequency contained in the meteorite fallen on the earth as well as the comprehensive effect of regulation of ecological balance of the meteorite in the crop rhizosphere so as to promote growth and increase crop yield, and the value of application is wide.

The invention provides a method for generating meteorite impact pit pattern effect on porcelain stoneware, which comprises the following steps: 1) mixing 1 part by weight of borax, 4-6 parts by weight of argil, 4-6 parts by weight of loess and 8-12 parts by weight water, and grinding into pulp as a cladding glaze; 2) spraying the cladding glaze on a porcelain stoneware blank to form a 0.1-0.3mm glaze; 3) firing the porcelain stoneware blank with the cladding glaze at 600-700 DEG C for 6-8 hours to form a cladding glaze surface; 4) mixing 4-6 parts by weight argil, 4-6 parts by weight of loess, 1-3 parts by weight of quartz, 1 part by weight of fusion cake and 9-13 parts by weight of water, and grinding into glaze pulp as an overglaze; 5) spraying the overglaze on the semi-finished product blank to form a glaze surface which is 0.1-0.3mm thick; and 6) firing the porcelain stoneware blank with the cladding glaze and the overglaze at 1150-1180 DEG C for 13-15 hours, and keeping the temperature for 1-1.5 hours to obtain the porcelain stoneware. The invention adopts a glaze low-temperature granular material method, and the low-temperature material is gasified in the firing process to generate the pattern of different sizes of pits formed by meteorite impacts on a celestial body, so that the porcelain stoneware has strong stereo perception and decorative effect; and the invention overcomes the defects of flat glaze surface and single decorative effect in the porcelain stoneware.

The invention discloses a meteorite medicine plaster for promoting pain rehabilitation. The plaster comprises a meteorite hot compress medicine plaster body and a meteorite cylinder block, the meteorite hot compress medicine plaster body comprises medical gauze, water-containing cotton towels covering the medical gauze and an alcohol cotton towel covering the medical gauze, meteorite wine is adsorbed to the medical gauze, the water-containing cotton towels are used for covering for two layers, medical alcohol with the mass concentration being 95% is adsorbed to the alcohol cotton towel, the meteorite cylinder block is formed by processing meteorite with the magnesium peroxide content larger than or equal to 20%, and the meteorite wine is made by soaking meteorite powder with the magnesiumperoxide content larger than or equal to 20% in baijiu. By means of the meteorite medicine plaster for promoting pain rehabilitation, the problems that in traditional products, symptoms but not the causes are treated, the rehabilitation time is long, the rehabilitation technology is hard to master, the technical requirements on employees are high, popularization is difficult, and the physical therapy method is single can be solved.

The invention belongs to the technical field of daily washing and protecting products, and particularly relates to toner with meteorite components and a preparation method of the toner. The toner comprises meteoric water, glycerin, 1,2-hexylene glycol, butylene glycol, lactobacillus / soybean fermentation product extracts, folic acid, sodium hyaluronate, tremella fuciformis extracts, essence, PEG (polyethylene glycol)-40 hydrogenated castor oil, 1,3-propylene glycol and octyl hydroxamic acid. The toner is mild in formula and contains the meteorite components, the meteorite components are absorbed through skins when the toner is used, moisture of the surfaces of the skins can be kept, the toner has the skin moisturizing function of common toner, skin surface and in vivo microcirculation can be improved, and a lot of beneficial mineral substances and microelements are brought for human bodies. Besides, the toner is safe, free from pollution and wide in applicability, and users are not limited.

The invention discloses a method and a device for processing reentry risk degree data of spacecraft disintegration fragments. The method comprises the steps of collecting state data of at least one disintegration fragment in the reentry meteorite falling state, wherein the state data comprises at least one of the mass, the reentry speed, the sectional area and the volume of the disintegration fragment; predicting a probability distribution density function of at least one disintegration fragment drop point based on the state data of the at least one disintegration fragment; calling geographic raster data used for representing population distribution on the earth surface; based on the probability distribution density function of each disintegration fragment drop point and the geographic raster data, obtaining risk data generated when each disintegration fragment impacts the earth surface, wherein the risk data comprises at least one of the following data: casualty area, casualty number and reentry risk degree. According to the invention, the technical problem of low accuracy of evaluating the ground risk degree of the reentry disintegration fragments of the spacecraft is solved.

The invention discloses a stone needle scraping massager, and relates to the massage instrument field. The stone needle scraping massager aims at solving the problem that traditional Chinese medicine stone needle therapy instruments are single in shape and single in function. According to the stone needle scraping massager, structure of a traditional stone needle scrapping plate is modified, grooves are formed in stone needle pieces, bulges are arranged on stone needle strips, a massage head is changeable in angle and thereby is changeable in shape by splicing the stone needle strips with the stone needle pieces in different modes, and simultaneously diverse functions are achieved due to the fact that a motor, an electrode and a heating layer are added, hot compressing and acupuncture functions are achieved simultaneously with stone needle massage, the diverse functions are simultaneously performed and complement one another, and furthermore blood circulation is easy to promote. The stone needle scraping massager is simple in structure, low in cost, convenient to operate, and particularly suitable for home use.

The invention provides a meteor crater mismatching determination method based on ratio of shaded area to external-contour area, and relates to the technical field of image processing, solving the problem of mismatching of conventional meteor crater extracting and matching method. The meteor crater mismatching determination comprises the following steps in sequence: selecting a meteor crater pair from the meteor crater pairs which are given the matching; calculating the altitude angle Theta of the sun at the image shooting time based on the ephemeris; calculating the ratio SR of the shaded area to the external-contour area, from the three-dimensional topography, of the meteor crater according to the three-dimensional model of the meteor crater and the altitude angle Theta of the sun; calculating the ratio S' of the shaded area to the external-contour area, from the image shot during falling, of the meteor crater; and if the absolute value of SR-S' is more than a given threshold, determining that the selected meteor crater is subjected to mismatching. According to the meteor crater mismatching determination method based on the ratio of the shaded area to the external-contour area, the mismatched meteor crater is removed from the meteor crater pairs which are given the matching after the matching between the meteor crater in the image which is shot when a lander falls and the meteor crater in the planetary three-dimensional topography is accomplished, and thus the accuracy in matching of the meteor crater can be improved.

The invention provides a forsterite refractory material for a high-temperature kiln and a preparation method of the material. According to the technical scheme, silicon-containing raw materials, magnesium salt, zinc-containing raw materials and iron powder are mixed, pressed and formed, subjected to heat treatment under the reduction atmosphere, ground and screened to obtain a material A; the material A, boronic acid, surfactant, thickener and additive are mixed, water is added, ball milling is conducted, and mixed slurry is obtained; magnesite fine powder, the silicon-containing raw materials, magnesium salt and the material A are mixed, pressed and formed, subjected to heat treatment and vacuum impregnation, subjected to heat treatment again, ground and screened, and a material B and a material C are obtained; magnesite particles, magnesite fine powder, the silicon-containing raw materials, the material B, the material C and the material A are mixed, pressed and formed and subjected to heat treatment, and the forsterite refractory material for the high-temperature kiln is obtained. Raw materials are wide in source, production cost is low, and the prepared forsterite refractory material for the high-temperature kiln is larger in normal-temperature compressive strength, good in thermal shock stability, high in refractoriness under load and excellent in erosion resistance.