174 results about "Emission channeling" patented technology

The invention relates to the field of a pet device, and especially relates to an intelligent pet food emitter. The intelligent pet food emitter comprises a matrix, the matrix is internally provided with an emission channel communicating with the outside, the emission channel is straight, the emission channel is internally provided with an impact rod, and a compression spring is arranged between the tail end and of the impact rod and the matrix; and the matrix at the upper end of the emission channel is provided with a food chamber for containing food, a discharge port at the bottom of the food chamber communicates with the emission channel, the matrix is internally provided with a reciprocating motion mechanism, and the reciprocating motion mechanism is connected with the impact rod through a disengagement mechanism. According to the intelligent pet food emitter, through arrangement of a mobile phone APP, real-time distribution of the food can be remotely controlled, the food is thrown to a certain distance by use of the emission channel, interaction fun with a pet can be realized, the pet status can be remotely observed, and remote conversation with the pet can be realized.

An opto-electronic module includes a detecting channel comprising a detecting member for detecting light and an emission channel comprising an emission member for emitting light generally detectable by said detecting member. Therein, a radiation distribution characteristic for an emission of light from said emission channel is non rotationally symmetric; and / or a sensitivity distribution characteristic for a detection in said detecting channel of light incident on said detection channel is non rotationally symmetric; and / or a central or main emission direction for an emission of light from said emission channel and a central or main detection direction for a detection of light incident on said detection channel are aligned not parallel to each other; and / or at least a first one of the channels comprises one or more passive optical components.

The invention discloses a micro / nano satellite measure and control communication integral transmitting and receiving system and a realization method thereof. The method comprises the following steps: 1) uplink signal processing: 11) receiving and processing radio-frequency signals to obtain analog intermediate-frequency signals; and 12) carrying out analog to digital conversion and digital underlocking on the analog intermediate-frequency signals and dividing into two paths of uplink digital intermediate-frequency signals, namely, one path of the signals is sent to a satellite-mounted computer by QPSK (quadrate phase shift keying) demodulation and uplink protocol processing so as to finish uplink data transmission, and the other path of the signals is subjected to the PM (phase modulation) demodulation to obtain side sound signals and PSK (phase shift keying) remote signals, and the PSK remote signals are subjected to BPSK (binary phase shift keying) demodulation to convert into a remote control command which is sent to the satellite-mounted computer so as to finish the remote control; and 2), downlink signal processing: 21), acquiring two paths of data from the satellite-mounted computer and a storage unit, namely, one path of data which is subjected to downlink protocol processing, BPSK modulation, combination with the side sound signals and downlink measure and control carrier PM modulation is combined with the other path of data which is subjected to the downlink protocol processing and the QPSK modulation to enter a satellite-ground radio-frequency emission channel; and 22) converting into radio-frequency signals to finish the remote measure and the downlink data transmission.

This invention relates to a LED light which can improve heat radiation effect. The light comprises a lamp body (1), a lamp body bottom cap (3), or a lamp body face cap (2), wherein the lamp body (1) can integrate the lamp body bottom cap (3) or the lamp body face cap (2) into a whole; the light also comprises a circuit which ha LED (4), electronic component and corresponding normal PCB printed circuit board (5); the circuit is in the lamp body or in the inner cavity of the lamp body bottom cap (3) or in the lamp body face cap (2); the printed circuit board has the corresponding filling hole with the LED (4), the LED pipe heat sink (7) will pass through the filling hole (6) and contact with the lamp body bottom cap (3) or lamp body (1) or lamp body face cap (2), forming the heat emission channel of the LED (4). By said invention, it can emit heat directly to air or water or earth.

A multichannel fluorosensor includes an optical module and an electronic module combined in a watertight housing with an underwater connector. The fluorosensor has an integral calibrator for periodical sensitivity validation of the fluorosensor. The optical module has one or several excitation channels and one or several emission channels that use a mutual focusing system. To increase efficiency, the excitation and emission channels each have a micro-collimator made with one or more ball lenses. Each excitation channel has a light emitting diode and an optical filter. Each emission channel has a photodiode with a preamplifier and an optical filter. The electronic module connects directly to the optical module and includes a lock-in amplifier, a power supply and a controller with an A / D converter and a connector. The calibrator provides a response proportional to the excitation intensity, and matches with spectral parameter of fluorescence for the analyzed fluorescent substance.

The invention discloses a multi-antenna correction method, a multi-antenna transmitter and a base station system, wherein the device includes at least one antenna, at least a duplex module, at least a stimulated emission channel and a digital emission channel, at least a stimulated receiving channel and a digital receiving channel, a DPD feedback channel, and a multi-antenna correction channel, wherein, the DPD feedback channel is used for receiving the operation signals output by the stimulated emission channel, and transmitting to the PD coefficient computing module to compute the obtained PD coefficient, and outputting to the digital emission channel to perform DPD correction; the multi-antenna correction channel computes the Tx correction coefficient according to the Tx correction signal and transmits to the digital emission channel to transmit the correction, or obtains the Rx correction coefficient according to the Rx correction signal, transmits to the digital receiving channel for receiving correction. According to the invention, the multi-antenna correction and DPD correction are combined, thereby advancing system performance.

A pre-distorting method deducts pre-distortion coefficient of feedback channel in pre-distortion coefficient obtained by existing technique to make pre-distortion treatment of input signal be distortion complete complementation of emission channel for raising accuracy of pre-distortion.

This invention relates to one mobile communication intelligent antenna down linkage wave beam endows method, which is characterized by the following: the basic station measures and feeds back the linkage signals to adjust the down linkage-weighted vector. The advantages of this invention lie in the following: a, of not strict requirement of aptitude and phase of receiving and emission channels; b, suitable for upper and down linkage and easy for wireless environment and suitable for wireless environment; c, without strict correction of receiving and emission channels.

This invention discloses a correction method for emission channels in a MIMO system including: a, carrying out baseband modulation to pilot signals and service signals to get baseband modulation signals to be converted to RF signals by the emission channels to be sent to the antenna interface, b, getting the pilot signals of the emission channels from the signals at the antenna interface to get the correction coefficient of the emission channels, c, utilizing the correction coefficients to correct the channels, which takes the pilot signals as the emission correction signals and the pilot signals are inserted for the channel estimation so it will not influence the network.

This application discloses a Doppler wind measurement lidar system. A small part of the laser signal emitted by the transmitting system enters the locked channel of the FP etalon through the locked channel optical path in the receiving optical system and the first analog detection for detecting the laser signal. The laser signal entering the locked channel of the FP etalon is detected by the second analog detector. The laser signals detected by the first analog detector and the second analog detector are collected by the analog acquisition card and sent to the first control system of the control system. The first control system processes the received laser signal collected by the analog acquisition card to obtain the frequency of the outgoing laser and the transmittance of the locked channel. According to the transmittance of the locked channel, the cavity length of the FP etalon is adjusted so that the emitted laser The frequency is locked at the cross point of the transmittance of the two signal channels of the FP etalon, realizing the real-time locking of the outgoing laser frequency and the position of the FP etalon, and improving the measurement accuracy.

The invention provides antenna emission calibration system and method, antenna receiving calibration system and method, and an antenna calibration system, wherein the antenna calibration system comprises a predistortion module, one or more operation emission channels, a calibration receiving channel, a calibration emission channel and one ore more operation receiving channels, wherein the predistortion module is used for carrying out digital predistortion processing on an emission calibration sequence; the one or more operation emission channel are respectively used for processing the predistorted emission calibration sequence and transmitting the processed and predistorted emission calibration sequence to a coupling network, wherein the operation emitting channel comprises a power amplification part; the calibration receiving channel is used for receiving an emission calibration sequence from the coupling network; and the one or more operation receiving channels are respectively used for receiving a receiving calibration sequence from the coupling network. The invention ensures that DPD (Digital Pre-Distortion) and AC (Antenna Calibration) cooperatively work and eliminates the nonlinearity caused by power amplification, thereby not influencing the amplitude and the phase position of the calibration sequence, ensuring that the antenna calibration is more accurate and greatly saving hardware resources by adopting a sharing mode of an operation antenna and a calibration antenna.

The present invention provides a high-performance coherent high-frequency radar multi-frequency detection method. The method comprises the steps of 1) assigning the frequency values of a plurality of frequencies and an observation wave beam of each frequency, and according to the direction of the observation wave beam, determining the phase shift increment of each frequency to thereby design an emission signal of each channel of a radar emitter; designing a calibration signal, obtaining an inconsistency error between emission channels and an inconsistency error between reception channels, namely, an amplitude error and a phase error, by taking a first channel as the reference; utilizing the inconsistency error between the emission channels to carry out the amplitude compensation and the phase compensation on the emission signals to thereby correct the inconsistency between the emission channels; 2) using the emitter to filter and amplify the compensated emission signals, and then using an antenna to emit the signals out; then, using the antenna and a radar receiver to receive the echoes of the signals; 3) carrying out the frequency separation on the echo digital signals, and utilizing the inconsistency error between the emission channels obtained in the step 1 to compensate the amplitude and the phase to thereby obtain the radar echo data.

Disclosed is a geodetic target object comprising at least one reflector surface, a receive channel with a detector (18) for receiving electromagnetic radiation (ES) transmitted by a measuring unit (2''), and a transmit channel with a radiation source (13'). The associated transmission port and / or reception port is / are integrated into the reflector surface or is / are embodied so as to adjoin the reflector surface such that radiation (RS) that is modulated for transmitting data can be transmitted in the direction of the measuring unit (2'') within the cross section (5'') of the radiation (ES) generated by the measuring unit (2'').

The invention provides a space-borne S-band and X-band link reconfigurable tracking, telemetry and command transponder. One receiving channel is used for performing down-conversion on S-band and X-band two uplink signals, combining the two uplink signals into one path of signal at middle frequency, performing AGC amplification filtering, and then sending the processed signals to a digital processing circuit, and then the digital processing circuit captures and demodulates remote-control signals and ranging signals by utilizing the received signals; meanwhile, digital processing software controls local frequency of the receiving channel and an emission channel according to S-band and X-band coincidence frequency calculation, and sends telemetered signals and forward ranging signals to the emission channel; and meanwhile, local frequency point setting is performed by software calculation, one receiving and transmitting channel is utilized to achieve uplink and downlink reconfiguration in an S band and an X band, so that the weight, the size and the power consumption of products are reduced, tracking, telemetry and command requirements of a moon relay satellite are met, the S band and the X band are utilized to complete tracking and telemetry of a satellite under a uniform carrier wave system, an uplink and downlink reconfiguration function is achieved, and uplink and downlink signal frequency is changed according to commands, so that forward and backward link requirements of a moon rover are met.

The invention relates to a spread spectrum signal source provided with the Doppler simulation function, including a Doppler dynamic simulation part, a data framing format arrangement and an IF signal modulated transmission part; the Doppler dynamic simulation part realizes the dynamic simulation of the motion state of a processor, including that the carrier NCO control word is figured out according to the control panel or the control of the host computer and is transmitted to the emission channel subsystem to control the carrier used for generating the Doppler frequency; meanwhile, the simulation process of the code clock Doppler frequency is processed synchronously. The data framing format arrangement part mainly realizes the generation and framing of the data with transmission information in the processor. The IF signal modulated transmission part realizes the code spread spectrum modulation of the information data and the PN code data; meanwhile, the information data and the PN code are transmitted together with the generated digital carrier; on the exterior of the software, the peripheral modulator is used to realize the carrier modulation and transmit the whole IF signal through the RF front-end.

The invention relates to the technical field of a transmit-receive frequency conversion channel, and discloses a millimeter wave 16-channel transmit-receive frequency conversion channel assembly, which mainly adopts a mixed design of an MMIC bare chip and an LTCC circuit and realizes a microminiature design through one or more frequency conversion. The transmit-receive frequency conversion channel assembly is in a three-layer structure on the whole, wherein the upper layer comprises a power control portion, the middle layer is a frequency conversion circuit portion and the lower layer comprises 16 paths of waveguide interfaces. The frequency conversion circuit portion comprises 16 paths of receiving channels, one path of emission channel and a local oscillator processing circuit. The receiving channels and the emission channel share the 16 paths of waveguide interfaces; transmit-receive time-sharing power supply is realized; channel switching is carried out through a radio frequency switch; power supply and control signals between the layers are connected through a miniature low-frequency connector; radio frequency signals are connected through a radio frequency isolator; and the layers are internally connected through via holes. Therefore, the millimeter wave 16-channel transmit-receive frequency conversion channel assembly realizes high-density integration of millimeter wave multi-channel transmit-receive frequency conversion channels, is small in size, light in weight and high in environment adaption capability, improves working stability and reliability of the system in various environment conditions, and meets the future trend of transmit-receive frequency conversion channel miniaturization.

An ultra low volume pressure independent spray head is disclosed whereby low flow characteristics of point source devices can be applied to larger wetted areas. Device uses elastomeric flow control where the emission channel is large enough to purge particulate matter from it's channels and the spray head has large enough orifices to allow the particulate to pass unimpeded through the discharge arena. This device is designed to utilize flow rates of less than 2 gallons per hour and can compensate for pressures between 10 and 60 pounds per square inch. Construction of this device is through the use of polymers, but other materials can be used as the design is such as to allow for a large variety of applications. This device can be used in the agricultural or horticultural application and is adapted for use in vineyards and can be used singularly or in multiple head arrangements. Design of inlet portion allows for use with flexible or rigid water supply means.

The invention discloses a TDD (time division duplex) radio-frequency receiving / emission circuit for discrete baseband signals, which comprises an emission channel, a receiving channel and a feedback channel, wherein the receiving channel and the feedback channel respectively comprise a plurality of sub-channels, the number of the sub-channels corresponds to the number of sub-basebands, the sub-channels of the receiving channel and the feedback channel are in one-to-one correspondence, each sub-channel in each pair of sub-channels is provided with a filter, the pair of filters are respectively set into the state of allowing a same specific baseband signal to pass through, and each pair of sub-channels output the specific baseband signal by a common branch circuit containing an analog-digital converter; during a time slot for emission, an external signal controls each sub-channel of the feedback channel to communicate with a corresponding common branch circuit, and controls each sub-channel of the receiving channel to disconnect with a corresponding common branch circuit; and during a time slot for receiving, the control purpose is contrary. By using the circuit disclosed by the invention, the operations of carrying out multiplexing on part of components and carrying out shunted processing on a plurality of discrete sub-baseband signals through the receiving channel and the feedback channel are realized, and the effects of low cost and miniaturization are achieved.

The invention relates to a broadband phased array radar echo simulator emission multichannel time-delay compensation method and system, and belongs to the technical field of electronics. The broadbandphased array radar echo simulator emission multichannel time-delay compensation method and system perform time domain filtering on a broadband signal by means of a variable fraction time-delay filterwhich is obtained based on a Taylor expansion method, realize high precision fraction time-delay, realize high precision integer time-delay through a shift register, and then realize multipath emission channel time-delay compensation of the broadband phased array radar echo simulator. The scheme of the broadband phased array radar echo simulator emission multichannel time-delay compensation method and system can effectively reduce the hardware demand for the system and has high compensation precision, on the basis of the FPGA-based accurate sequential control and quick parallel processing capability, by integrating with the digital signal processing technology, and is specially suitable for time-delay compensation of the variable bandwidth scene.

The invention discloses a magnetic resonance system imaging method, which comprises the following steps: under a multichannel emission mode, according to spin echo signal intensity SSE and stimulated echo signal intensity SSTE, carrying out optimization on amplitude and phase parameters of a plurality of radio frequency emission channels to generate a target B1 field, wherein the target B1 field meets B1 field uniformity and radio frequency emission power optimization simultaneously; loading the optimized amplitude and phase parameters to a radio frequency pulse controller, and driving the plurality of radio frequency emission channels to generate the target B1 field; under the target B1 field, exciting a part to be scanned of a subject to obtain a magnetic resonance signal of the part to be scanned; and carrying out Fourier transform on the magnetic resonance signal to obtain a magnetic resonance image of the part to be scanned. The spin echo signal intensity and the stimulated echo signal intensity are collected to reflect distribution of the B1 field; and fast correction can be carried out to obtain a uniform B1 field, and radio frequency emission power can be corrected. The invention also provides a magnetic resonance system.

The invention discloses a diversity receiver and a terminal. The diversity receiver comprises a first main set channel and a first diversity channel. The first main set channel comprises an antenna splitting device and a first main set emission channel. The first diversity channel comprises an adjustable band pass filter and a first diversity receiving channel. The first diversity receiving channel is coupled to a diversity antenna through the adjustable band pass filter. The adjustable band pass filter is used for adjusting a pass band width of the adjustable band pass filter according to a frequency band width of a first emission signal generated by the first main set emission channel and a frequency band width of a first receiving signal received from the diversity antenna and carrying out band pass filtering based on the pass band width on the first receiving signal. By using the diversity receiver provided in the invention, receiving performance of the diversity receiver can be increased and demands of miniaturization and low cost are satisfied.

The present invention relates to a laser anemometer making it possible to determine the relative velocity between the anemometer and an ambient medium. The architecture of the anemometer includes a laser source, emission and reception optics for focusing a laser beam onto a measurement zone containing particles in suspension in the ambient medium and for receiving the radiation back-scattered by the particles. It also includes an optical mixer for mixing the received radiation and reference radiation representing the radiation emitted by the source, and a detector at the output of the mixer. The relative velocity between the anemometer and the ambient medium is determined by computation on the basis of the Doppler effect generated by the radiation and detected by the detector. The laser source is located remotely from a common support which carries the optical emission and reception system as well as the mixer. It is connected to this common support by at least one optical fiber. The detector is also remotely located and connected by at least one optical fiber. The main emission channel of the emission and reception system carried by the support is produced with the aid of unguided optics.

The invention discloses a precoding treatment method for a multi-input multi-output (MIMO) broadcast channel, and a precoding treatment device and a base station thereof. The method comprises the following steps: utilizing a unit matrix as a decoding matrix of a receiver o obtain a receiver initial decoding matrix; calculating an initial precoding emission matrix corresponding to each user data stream according to the receiver initial decoding matrix and the minimum mean square error standard; utilizing the multiplication of an emission channel matrix and the initial precoding emission matrix as an equivalent channel corresponding to the user, and performing the singular-value decomposition of the equivalent channel corresponding to the user and then selecting a right eigenvector with the maximum eigenvalue from the decomposition results; utilizing the multiplication of the initial precoding emission matrix and the conjugate transpose of the right eigenvector as a first precoding emission matrix; performing the iterative calculation of the final precoding emission matrix and the decoding matrix of the receiver by utilizing the first precoding emission matrix until the preset condition comes into existence. The precoding treatment method increases the convergence rate of calculating the precoding emission matrix and the receiver decoding matrix.

The invention discloses a wireless access network, a terminal, a frequency spectrum using / multiplexing method and a communication implementation method. The frequency spectrum using method comprises the following steps that: working bands of a radio frequency receiving channel and a radio frequency emission channel of the terminal are configured to simultaneously cover a frequency band of a time division duplex TDD system and a frequency band, which is adjacent to the frequency band of the time division duplex TDD system, of a frequency division duplex FDD system; the terminal transmits data on the configured working bands. By configuring the used frequency spectrum of the wireless access network, the wireless access network, the terminal, the frequency spectrum using / multiplexing method and the communication implementation method of the invention solve the configuration problem of carriers special for an MBMS and allow a plurality of wireless access networks to provide services to respective user in parallel, thereby improving the service efficiency of the frequency spectrum and support ability of breaking through the services.

The invention provides a method for processing ultrasonic emission delay. Saved delay parameters are relative delay parameters, namely an earliest emission channel saves the delay relative to an emission starting signal, other channels save relative delay values with adjacent channels; or the delay values of adjacent channels are encoded so as to further reduce the bit width of the delay parameter; because the delay difference of adjacent channels is extremely small, generally only a space of less than 8 bits can save the delay; and thus the size of a cache for saving the delay can be reducedby more than half, a control unit for delay count is simplified, and the cost performance of the system is improved.

The embodiment of the invention discloses a united channel correction method for multiple remote radio units (RRU) and a related device. The united channel correction method comprises steps of that a BBU sends a first channel correction instruction to a first RRU, and the first channel correction instruction triggers the first RRU to send a first correction reference signal to an X2 receiving channel in X2 service channels in a second RRU through an X1 emission channel in X1 service channels of the first RRU; the BBU sends a second channel correction instruction to the second RRU; and the BBU carries out calculation to obtain a correction compensation factor of the X1 service channels and / or the X2 service channels according to the first correction reference signal, a receiving result for the first correction reference signal of the X2 receiving channel, a second correction reference signal and a receiving result for the second correction reference signal of the X1 receiving channel. According to the technical scheme provided by the embodiment of the invention, realization of channel correction among RRUs without correction reference channels is facilitated.

The invention discloses a simultaneous, cofrequency and full-duplex radio-frequency-domain rapid self-interference suppression system and a method thereof. The system comprises a radio frequency emission channel, an emission antenna, a radio frequency receiving channel, a receiving antenna, a time delay device, an interference reconstruction branch, a dimension reduction operation branch and a subtracter. By using the simultaneous, cofrequency and full-duplex radio-frequency-domain rapid self-interference suppression system and the method thereof, when a phase shift value of a second adjustable phase shift circuit is set to be 0 degree and 90 degree, an output signal of the second adjustable phase shift circuit and a signal received by the receiving antenna are multiplied through the multiplier; and according to a signal output by the multiplier under the two phase shift values, an optimal phase shift value and an attenuation value are calculated, and an adjustable attenuator and a first adjustable phase shift circuit are adjusted. Two-dimensional solutions of optimal values of the adjustable attenuator and the first adjustable phase shift circuit are converted into an one-dimensional solution and subsequent calculating related to a receiving self-interference signal and a self-interference reference signal, and a convergence speed of radio-frequency-domain self-interference suppression is increased.

The present invention discloses a double-antenna wireless digital relay device, an operation method and a frame structure. The relay device comprises a donor antenna, a reemission antenna, a first receiving channel, a first emission channel, a management control unit, a second receiving channel, a second emission channel, a base band processing unit from a terminal to a base station and a base band processing unit from a base station to a terminal. Wherein, the management control unit is connected with and controls these two base band processing units. Concurrent emission and concurrent receiving of the donor antenna and the reemission antenna complete synchronous emission and receiving from the relay to the base station and from the relay to a mobile terminal. With the help of the concurrent emission and receiving of the donor antenna and the reemission antenna, the present invention improves frequency spectrum utilization ratio and makes full use of antenna directivity.

The invention discloses a Big Dipper detector. The Big Dipper detector comprises a host supporting multiple frequency point signals and a handheld dark chamber used for covering an antenna of a user machine to be detected. The host is connected with the handheld dark chamber through a radio frequency cable and a serial port of the user machine to be detected is connected with the host. The host comprises a PC, a radio frequency circuit, an FPGA module, a DDR2 module, a DAC module, an ADC module, a clock distribution module, an interface circuit, a USB module and a power module. The FPGA module is connected with an emission channel through the DAC module and the radio frequency circuit, and a receiving channel of the radio frequency circuit is connected with the FPGA module through the ADC module; the DDR2 module is connected with the FPGA module, the clock distribution module is connected with the FPGA module, the FPGA module is connected with a USB port of the PC through the USB module and the interface circuit, and the FPGA module is connected with the serial port of the PC through the interface circuit. The power module provides a power source. The Big Dipper detector is integrally designed and is convenient to use.