187results about How to "Realize seamless splicing" patented technology

The invention relates to an airborne distributed inertial attitude measurement system and a transfer alignment method of the airborne distributed inertial attitude measurement system. The airborne distributed inertial attitude measurement system comprises a master inertial navigation system, a main control computer, and six slave inertial navigation systems connected with the main control computer, wherein each slave inertial navigation system respectively comprises an inertial measurement unit and an attitude measurement processing board, each inertial measurement unit is connected with an RS_422 interface of the corresponding attitude measurement processing board, each RS_422 interface is connected with an FPGA (Field Programmable Gate Array) chip through a UART (Universal Asynchronous Receiver / Transmitter) control chip, each FPGA chip is connected with a DSP (Digital Signal Processor) chip through an EMIF (External Memory Interface) bus and also connected with the master inertial navigation system through a CAN (Control Area Network) controller and a CAN transceiver, and the main control computer is connected with the master inertial navigation system. The transfer alignment method between the master inertial navigation system and each slave inertial navigation system of the airborne distributed inertial attitude measurement system comprises the steps of: by taking the speed information error and the attitude information error of the master inertial navigation system and the slave inertial navigation systems as measuring variables, correcting speed information and attitude information calculated by the slave inertial navigation systems after carrying out Kalman filtering iteration, and finally obtaining stable and accurate navigation attitude information.

The invention relates to comprehensive geographical spatial data coordinate conversion method and system. The method comprises the following steps: setting a source coordinate format and a target coordinate format; setting a source coordinate system and a target coordinate system; selecting a conversion mode and a conversion model of coordinate conversion, and setting a conversion parameter of the coordinate conversion; inputting coordinate data of a known control point in the source coordinate system and the target coordinate system; calculating coordinate conversion parameters according to the coordinate data of the known control point; and converting the coordinate data of a to-be-converted point in the source coordinate system into the coordinate data of the target coordinate system according to the coordinate conversion parameters. The comprehensive geographical spatial data coordinate conversion method and system can be used for achieving space coordinate conversion between geographical spatial data with different formats and different coordinate forms, proportional scales and coordinate systems, achieving conversion and calculations such as projection and band change of geographical spatial data achievements between different coordinate systems, and achieving conversion parameter calculation and accuracy assessment; meanwhile, the input process of the coordinate data of the control point is simple; and the coordinate conversion efficiency is high.

The invention discloses an adjusting module based on variable curvatures and an arc-shaped LED display screen spliced from the adjusting module. The adjusting module comprises a first part and a second part, wherein the first part consists of angle adjusting components; the second part consists of positioning and locking components; the first part comprises a sliding set and a fixed angle set; the second part comprises a buckle set and a safety anti-loosing set. The invention further discloses the arc-shaped LED display screen based on the variable curvatures. The arc-shaped LED display screen comprises a plurality of unit boxes and a plurality of adjusting modules based on the variable curvatures. A right fixing block on the first part and a left fixing block on the second part are respectively mounted on adjacent sides of each unit box body, the adjusting module is adopted for angle adjustment and locking and positioning on adjacent unit box bodies, and the arc-shaped LED display screen of which the angle can be randomly varied within the range of 10 degrees can be formed. The adjusting module has the advantages of high universalization degree, applicability to multiple mounting situations, convenience in assembly and disassembly, high bearing capacity and solidness, adjustable radian and seamless splicing.

An automatic micro image jointing, storage and browsing method comprises unit image with recorded location, evaluating the jointing possibility of adjacent unit image, generating the optimal jointing sequence to get the relative position of each unit image, to generate the overall image after jointing based on the absolute position of each unit image based on the relative position, storing the relative position information of each unit image and the image, displaying the unit image required in the absolute position information acquisition of each unit image. It gets over a series of issues occurred in the processes like capture, joint, storage, and browsing due to the oversize of the image of existing microscope in the process of image acquisition and section handling.

The present invention discloses a color filter which is provided with a transparent baseplate; a shading zone is formed on the baseplate and a plurality of pixels are also distributed on the baseplate, wherein, each pixel is provided with a first color zone, a second zone and a third zone, in particular the first color zone, the second color zone and the third color zone of each pixel are centrosymmetric hexagons, and with an arbitrary first color zone as the center on the transparent baseplate, six mutually spaced second color zones and third color zones are faveolately in scarf joint around. The color filter with the structure has good color display effect and can weaken sawtooth in the margin of image when the image is displayed obliquely.

The invention provides a mosaic mode implementation method based on agile SAR (synthetic aperture radar) satellite attitude maneuvering, and the method comprises the steps: calculating total parameters for achieving the mosaic mode imaging; calculating the parameters of a central imaging subblock of an image formed by the mosaic mode imaging; gradually increasing the imaging subblocks based on the central imaging subblock, and calculating the parameters of the imaging subblocks till the obtained azimuth imaging of the image meets the demands. Therefore, the method gives full consideration to a precise track and an earth model, designs an aiming point and working time sequence of an agile SAR satellite according to the mosaic mode demand performance indexes and imaging geometry, obtains the beam pointing direction needed by imaging through the lateral rolling and pitching maneuvering of the whole satellite, controls the direction of a ground footprint of a radar beam through the yaw maneuvering of the whole satellite, and achieves the quick switching of the beam in a range direction through electric scanning. The method guarantees the seamless joint between different image sublocks in the mosaic mode, and provides an economical and high-efficiency implementation solution.