116results about How to "Reduce the amount of equipment" patented technology

The invention discloses a broadband channelization reception system of radar with an external radiation source and an FPGA (Field Programmable Gate Array) implementation method. The FPGA implementation method comprises the steps of: dividing received radar broadband signals into multiple paths of analogue signals through a power division filter module; transmitting each path of analogue signals after AD (Analogue-Digital) conversion into an FPGA for frequency point separation; converting to a baseband through down-conversation in the FPGA; sequentially carrying out a multi-phase structured deceleration treatment, channelization treatment, FIFO (First In First Out) series and parallel conversion treatment and FFT (Fast Fourier Transformation) on baseband signals; and finally outputting output signals of any eight frequency points through the FPGA. The reception system comprises a power division filter module, an analogue-digital conversion module and an FPGA frequency point separation module. According to the invention, echo signals of the radar are subjected to a segmental treatment, and the same treatment is adopted for the signal separation process of each path of the analogue signals after the segmentation. Different clock frequencies are adopted at different treatment stages of the FPGA frequency point separation. According to the broadband channelization reception system of the radar with the external radiation source and the FPGA implementation method, disclosed by the invention, the difficulties of great equipment amount and high development cost when the traditional reception system of the radar with the external radiation source implements synchronous reception of multiple signals of the broadband signals are solved; and complexity and cost of the system structure are decreased.

The invention discloses a double-linear polarization Doppler weather radar system which comprises an outdoor part and an indoor part. The outdoor part comprises an antenna servo subsystem, a transmitting subsystem, a receiving subsystem, a monitoring calibration subsystem and a power distribution subsystem. The indoor part comprises a signal processing terminal and a user subsystem. According to the double-linear polarization Doppler weather radar system, the ingenious signal link design is adopted, the equipment quantity is reduced, and the reliability of the system is improved; a multi-channel signal processing mode is used, simultaneous measurement of all parameters of a double-linear Doppler weather radar is achieved, and the timeliness of detection data is improved; a signal processing technology based on a GPU is utilized, and the processing capacity of double-linear signals is enhanced; a unique two-channel full-path transmitting-receiving calibration technology is used, two-channel transmitting-receiving system errors of the radar system are reduced, and an effective guarantee is provided for improving the quality of the detection data.

The invention relates to the field of fabrication of a solar cell, in particular to a surface passivation and anti-reflection technology of crystalline silicon cell for improving photoelectric conversion efficiency. Aiming at the existing cell technology process flow, nanometer lamination of a material such as SiO2, Al2O3 and SiNx and a composite material are fabricated by atomic layer deposition and plasma atomic layer deposition, passivation layer plating is carried out on the front surface and the back surface of the crystalline silicon cell, so that the minority carrier lifetime is prolonged, and the photoelectric conversion efficiency of the cell is improved; and SiNx anti-reflection layer plating can be continuously carried out after passivation layer plating, so that passivation and anti-reflection processes can be integrated in the same flow, the cost is reduced, and the yield is improved. The fabrication method is particularly and suitably used for combining with a black silicon technology, and multiple processes are avoided; and moreover, for a double-sided battery, the fact that double-sided passivation is carried out by using the fabrication method is a necessary choice.

The invention relates to a meteorologic signal processing IP core of low-altitude monitoring radar and a real-time data sorting method of the meteorologic signal processing IP core. The IP core comprises a digital intermediate frequency phase demodulation module, a pulse compression module, a data rearrangement module, a time domain windowing and FFT module, a noise power estimation module, a point clutter suppression module, an autocorrelation parameter estimation module, a distance averaging module, a distance and intensity correction module and a threshold crossing processing module. The meteorologic signal processing IP core of the low-altitude monitoring radar has the advantages of being simple in structure, high in real-time processing capacity and reliability and the like, target detection and meteorologic detection in the low-altitude monitoring radar are made compatible with each other, and the IP core further has the advantages that the number of system elements is reduced, and integration degree and stability of the system are improved. Through the real-time data sorting method, the complexity of data sorting in space and time can be greatly reduced, and the real-time data sorting method is high in reliability and real time performance and provides a guarantee for precise estimation of noise power.

The invention relates to a large-scale radar antenna deformation real time measurement system, comprising a plurality of PSD laser sensors for measuring the deformation amount of deformation key points and laser sources corresponding to the deformation key points on one-to-one basis; the output terminal of the PSD laser sensor is connected to the input terminal of a data collection unit; the output terminal of the data collection unit is connected to the input terminal of the data processing unit; the output terminal of the data processing unit is connected to the input terminal of a deformation display unit for displaying whole deformation curve surface of an antenna array on real time. The invention also discloses a large-scale radar antenna deformation real time measurement method. The invention converts the whole field deformation measurement of a super big array to a series of relative deformation measurements corresponding to the key points, which is simple in theory, small in devices, high in accuracy, fast in processing data, and can satisfy the real time performance measurement needs for big array surfaces and high accuracy.

The invention relates to a digital array radar amplitude-phase monitoring and calibration method based on an optical fiber delay system. The method mainly includes the steps that a radar array front array element and an array front monitoring coupled array element are utilized to collect amplitude-phase data of all uplink channels and all downlink channels of the radar array front array element in a mutual coupling mode, amplitude-phase monitoring of all the uplinks and the downlinks of a radar array front is finished, when amplitude-phase correction and calibration need to be conducted on the array front, the difference value between the amplitude-phase data and factory data is acquired through amplitude-phase monitoring, and then amplitude-phase calibration of the uplinks and the downlinks of the array front is finished after the difference value is corrected. According to the method, the optical fiber delay system is introduced to separate transmitting time from receiving time, within a transmitting monitoring operation time sequence, the monitored channels work in a deep blanking state, optical fiber amplitude-phase drifting self-calibration is finished, and accuracy of monitored data is guaranteed. The method has the advantages of being good in real-time performance, convenient and quick to operate, and good in cost performance. The presentation and engineering realization of the method have high practical application value in the field of digital array radar monitoring and calibration.

The invention discloses an embattling method of logarithmic spiral array antennas. An antenna array uses N logarithmic spirals to embattle; a single logarithmic spiral line function is as follows: r=e, and an antenna unit is displaced on the logarithmic spiral line function r=e, wherein (r, phi) is a position coordinate of any point on the logarithmic spiral line under polar coordinates, r is a distance from the point to an original point (unit: wavelength), namely a relative wavelength number, phi is an angle relative to a polar axis (0 degree), and a is a parameter of the logarithmic spiral line function and is an optimizable constant for designing the array; the antenna unit n on each logarithmic spiral is arranged at the position of phi n along the spiral line function; the phase difference between adjacent units is delta phi; N spiral lines rotate 360 degrees / N rounding a rotating shaft in turn; r of the initial starting point of each logarithmic spiral line is the same; the phase position of the initial starting point of the first starting point on each spiral line is phi0; m array elements are respectively arranged on each spiral line from the initial starting point at an interval of delta phi; one array element can be placed at the center of the array, namely original point, or not; when the parameter a, delta phi and phi0 are determined, an array manifold is determined; and the total antenna unit number of N logarithmic spiral arrays is Nm+1.

The invention discloses a multi-target measurement and control communication antenna array optical fiber closed-loop calibration method, and aims to solve the problems of multiple antenna error calibration test parameters, inconsistency of receiving channels including antenna unit mutual coupling and large test quantity. The method provided by the technical scheme of the invention comprises the steps that a calibration signal generation unit generates receiving and transmitting calibration baseband signals based on a starting instruction; the receiving calibration baseband signal is subjectedto up-conversion to a radio frequency through the calibration frequency conversion unit, is transmitted to optical transmission equipment, is transmitted to the optical receiving / transmitting module of an antenna subarray through an optical fiber, is coupled to each receiving channel, and is transmitted to an amplitude-phase consistency measurement unit through the optical fiber after being processed, so that closed-loop calibration of receiving channels is realized; the transmitting calibration baseband signal is output to a receiving / transmitting calibration switch network through a switch network and a coupler and transmitted to rear-end optical transmission equipment; and the transmitting calibration baseband signal is obtained through down conversion and transmitted to the amplitude-phase consistency measurement unit, and closed-loop calibration of transmitting channels is achieved.

The invention discloses a grid groove metamaterial waveguide slot antenna and a design method therefor. The waveguide slot antenna comprises a metal waveguide tube with radiation slots, wherein the metal waveguide tube is used for allowing electromagnetic wave at working frequency bands to transmit in the antenna, and suppressing transmission of stop-band electromagnetic wave at low frequency bands in the antenna; multiple metal columns are distributed on the internal bottom surface of the metal waveguide tube; and the upper end planes of respective metal columns form a discontinuous metal surface used for stopping transmission of stop-band electromagnetic wave at high frequency bands in the antenna. Through fused design, a filter and the antenna, which are originally two independent microwave parts, can be skillfully fused together, so that the antenna can perform radiation as normal in the working frequency bands, and also can realize the dual-frequency-band suppression capacity outside the working frequency bands; and in addition, by virtue of the fusing mode, the interference resistance design difficulty of the system is lowered, and equipment quantity is reduced.

The invention relates to a preparation method of high-temperature oil-coal slurry, which comprises the following steps of: (1) conveying pulverized coal from a pulverized coal storage tank into a horizontal solid-liquid mixer through a pulverized coal feeding hole to mix with solvent oil which is sprayed in from a high-temperature solvent tank through a liquid feeding hole, discharging the pulverized coal through a discharging hole of the horizontal solid-liquid mixer and conveying to a coal slurry stirring kettle; (2) further homogenizing the oil-coal slurry in the coal slurry stirring kettle under the action of a stirring paddle; and (3) extracting the oil-coal slurry from the coal slurry stirring kettle through a coal slurry discharging pipeline, wherein one part of the oil-coal slurry is returned to the coal slurry stirring kettle by the coal slurry discharging pipeline, and the rest is conveyed to a downstream liquefaction reaction system by a reaction material conveying pipeline. The method can solve the problem that coal particles of small granularity are hardly and fully dispersed in the solvent oil to form even high-temperature oil-coal slurry, and can be used for rapidly preparing qualified coal slurry and continuously producing coal slurry by a coil liquefaction reaction.

The invention relates to a reconfigurable task processing unit structure of a high performance computing system, in particular to a flexible reconfigurable task processing unit structure; the flexible reconfigurable task processing unit structure RcTPU comprises n universal processors and m reconfigurable processors as well as p storage controllers, q storages, crossbar switches and a switched networks; the switch ports of the universal processors and the reconfigurable processors are connected with the crossbar switches, the storage ports of n universal processors and m reconfigurable processors are directly connected with p storage controllers or connected with the switched networks via r network interfaces, one storage controller or one network interface are connected with at least one universal processor, the crossbar switches comprises monolayer switch arrays or multilayer switch arrays, and each layer of switch arrays in the multilayer switch arrays are connected in a cascade way; the invention can effectively improve the applicability and efficiency of a high performance computer regarding different task streams.

The invention relates to a method for comprehensively treating sludge generated by a sewage treatment plant and kitchen waste oil, which comprises the following steps of: (1) sludge formation; (2) frying dehydration; (3) burning and heat exchange; (4) tail gas processing; and (5) slag collection. The invention also relates to a comprehensive treatment device which consists of a sludge forming unit, a frying and drying unit, a burning unit, a heat exchange unit, a solid slag processing unit and a waste gas processing unit. A discharge port of the sludge forming unit is connected to a feed inlet of the frying and drying unit; a discharge port of the frying and drying unit is connected with a feed inlet of the burning unit; a slag outlet of the burning unit is connected to a slag inlet of the solid slag processing unit; a high temperature flue gas exhaust port of the burning unit is connected with the heat exchange unit; the heat exchange unit is connected to a heating chamber of the frying and drying unit; and the frying and drying unit and a waste gas exhaust port of the heat exchange unit are connected to the waste gas processing unit. According to the method and device provided by the invention, the resource recovery, the reduction and the harmless treatment of two types of wastes in towns, i.e. the kitchen waste oil and the sludge generated by the sewage treatment plant, can be implemented.

The invention discloses an interferometer direction-finding-based LFMCW radar multi-target detection method. The detection method comprises the following steps that the lengths of three real baselinesand a virtual baseline of an interferometer are determined; acquisition and processing of three-channel radar echo signals are carried out; after fast Fourier transform is carried out, the frequencyspectrums of upper and lower frequency sweep difference beating signals of the three channels are subjected to periodogram accumulation, and then the accumulated spectrums are subjected to constant false alarm detection; spectrum peaks of the upper frequency sweep band and the lower frequency sweep band are paired to obtain a spectral peak pairing matrix, and the angle difference, the Doppler frequency and the normalized amplitude difference of each pair of spectral peaks in the matrix are calculated; the matrix is screened by using the angle difference, the Doppler frequency and the normalized amplitude difference; and the distance and speed of a target are calculated for the completely paired spectrum peaks. According to the method, false targets appearing in the upper and lower frequency sweep pairing of the triangular modulation LFMCW can be reduced, the reliability of multi-target detection is improved, and the distance, speed and angle information of multiple targets can be measured.

The invention discloses a self-detection method for a unifrequency source of a traffic collision avoidance system simulator, which is characterized in that a query module capable of generating a frequency of 1030MHz and a response module capable of generating a frequency of 1090MHz are respectively arranged, and the query module and the response module are used as respective self-detection sources after being connected by a coupler and a radio frequency cable, thereby realizing that one 1090-MHz frequency source is omitted in the query module, one 1030-MHz frequency source is omitted in the response module, and the aim of simplifying a self-detection circuit is achieved. The invention reduces equipment at a self-detection part of the traffic collision avoidance system (TCAS) simulator, simplifies the self-detection circuit, is suitable for self-detection of general civil aviation query-response equipment and similar occasions and has the advantages of simpleness, reliability and the like.

The invention belongs to the technology of radar waveform design and relates to an improved pulse waveform for a field surveillance radar. The improved pulse waveform is characterized in by comprising narrow pulses and broad pulses alternately one by one; and one pulse waveform period is composed of one period of narrow pulse and one period of broad pulse, wherein the narrow pulse is composed of single-carrier frequency sine wave signals. The pulse waveform has the advantages of less amount of needed equipment, strong multi-target resolution capacity and low emission peak power.

This invention discloses an underground space passive relay communication system compose of a fixed or mobile communication base station, a passive relay unit, a power distribution / synthesizer and a low loss cable which mounts a passive relay in tunnel / and locomotive at the same time to utilize the effective space of the tunnel based on the relations between medium waveguide wave section to realize communication in tunnel with the least transmission loss.

The invention relates to a PBT (polybutylene terephthalate) esterification reaction system, which comprises a slurry finished product tank, a catalyst tank, an esterification reaction kettle, a pre-condensation reaction kettle and a final condensation reaction kettle, wherein a discharging opening of the slurry finished product tank is connected with a slurry inlet of an esterification kettle; a discharging opening of the esterification kettle is connected with a feeding opening of a pre-condensation kettle; a discharging opening of the pre-condensation kettle is connected with a feeding opening of the final condensation kettle; a catalyst inlet arranged at the bottom of the esterification reaction kettle is provided with a catalyst bottom injection valve; a barrel pump outlet built in a catalyst barrel is connected with a feeding opening of the catalyst tank through a barrel pump output pipe; an air inlet on the top of the catalyst tank is connected with a nitrogen pipe; a dischargingopening of the catalyst tank is connected with an inlet of a catalyst metering pump; an outlet of the catalyst metering pump is connected with a material inlet of a catalyst heater through a catalystfilter; a material outlet of the catalyst heater is connected with an inlet of the catalyst bottom injection valve through a catalyst bottom injection pipe. The catalyst of the system does not need to be mixed with BDO (1,4-butanediol) for preparation; hydrolysis or pipeline blockage is not liable to occur; the continuous production can be ensured.

The invention relates to a test run system and method of a low temperature air compressor. The system comprises a liquid nitrogen supplying device, an air temperature device, a temperature regulating device, a compressor inlet buffer tank, a compressor and a compressor outlet buffer tank. The liquid nitrogen supplying device feeds the liquid nitrogen to the air temperature device to evaporate the liquid nitrogen into nitrogen; the nitrogen evaporated by the air temperature device and the nitrogen from the compressor outlet buffer tank are converged and then enter the temperature regulating device to be mixed with the liquid nitrogen from the liquid nitrogen supplying device, and the temperature of the nitrogen output from the temperature regulating device is stabilized to be equal to the air inlet temperature of the compressor; the temperature regulating device feeds the nitrogen with the temperature stabilized to the compressor inlet buffer tank, and the compressor feeds the compressed nitrogen to the compressor outlet buffer tank; and the compressor outlet buffer tank feeds the buffered nitrogen to the temperature regulating device. The test run system and method can stably control the temperature of the inlet nitrogen of the compressor, can reduce consumption of the liquid nitrogen simultaneously and reduces device using amount and floor space.

The invention provides a method and a device for coal chemical sewage reuse and zero emission. The device comprises: an oil separation tank; an ultramicro air flotation instrument, which is communicated with the oil separation tank; and a multistage A / O system, which consists of: an anaerobic zone communicated with the ultramicro air flotation instrument, an aerobic zone communicated with the anaerobic zone, a precipitation zone communicated with the anaerobic zone, and a stable zone communicated with the precipitation zone; a membrane filtration system, which is communicated with the stable zone and the anaerobic zone; a super-efficient reverse osmosis system, which includes: a hardness removal instrument communicated with the membrane filtration system, a soluble gas removal instrument communicated with the hardness removal instrument, and a membrane filtration instrument communicated with the soluble gas removal instrument; a membrane filtration generated water storage tank, which is communicated with the membrane filtration instrument; a membrane filtration concentrated water storage tank, which is communicated with the membrane filtration instrument; and an evaporation crystallizer, which is communicated with the reverse osmosis concentrated water tank. The device and the method provided by the invention ensure the effluent water quality and no exterior drainage, and truly achieve zero emission.

The invention provides a waveform design method of a high-resolution wide-width SAR based on pitch-dimensional frequency intra-pulse scanning. The objective of the invention is to complete waveform design of a single-channel high-resolution wide-width SAR through a pitch-dimensional frequency intra-pulse scanning technology. The method comprises the following implementation steps: setting input parameters; constructing a transmitting antenna array; synthesizing a transmitted waveform; extracting a time-space directional diagram of a pitch-dimensional frequency intra-pulse scanning signal in the transmitted waveform; calculating the instantaneous beam pointing angle of the time-space directional diagram; calculating the number of transmitting antennas of the transmitting antenna array; calculating the signal bandwidth of the transmitted signal; calculating the center frequency of the transmitting signal and the time delay between the adjacent transmitting antennas; and obtaining the waveform design result of the high-resolution wide-width SAR scanned in the pitch-dimensional frequency pulse. According to the method, the transmission waveform is designed to control the instantaneousbeam pointing angle of the synthetic directional diagram to realize intra-pulse beam continuous scanning, spatial filtering is equivalently realized by utilizing frequency domain filtering to completerange ambiguity suppression, and engineering implementation is relatively simple.

The invention discloses a continuous washing device and method for electrolytic copper powder, and belongs to the technical field of electrolyzing. The device is divided into three layers, wherein the first layer is a spraying device area, the second layer is a powder washing device, and the third layer is a washing liquid collecting area; the spraying device area is composed of a circulating acid liquor tank, a deionized water tank and a passivating solution tank; the powder washing area is composed of a turntable, a filtering net and a rotating motor; a distributing area, a circulating acid liquor spraying area, a deionized water spraying area, a passivating solution spraying area, a rolling brush cleaning area and a powder collecting area are distributed on the turntable; the rotating motor is connected with the turntable through a gear; the washing liquid collecting area is composed of a vacuum filtration device and a collecting cover. With the adoption of the device, the copper powder can be directly dried after acid pickling, water washing, passivating and dewatering, so as to obtain a product. With the adoption of the device and the method, production equipment can be decreased; the labor intensity of operators can be reduced; the water is saved; the energy consumption and the product loss can be reduced; the productivity and the product quality can be improved.

The disclosure contained herein describes systems, units, and methods usable to stimulate a formation including a pump usable to pressurize fluid, an electric-powered driver in communication with and actuating the pump, and an electrical power source in communication with and powering the electric-powered driver. The electrical power source can include on-site generators and / or grid power sources, and transformers can be used to alter the voltage received to a voltage suitable for powering the electric-powered driver. Air moving devices associated with the electric-powered driver can be used to provide air proximate to the pump to disperse gasses. In combination with fluid supply and / or proppant addition subsystems, the pump can be used to fracture a formation.

The invention provides a treatment device for polycrystalline silicon reduction tail gases. The treatment device comprises a scrubbing tower, a circulating pump protection unit, a scrubbing tower circulating pump, a dust removal unit, a multistage cooling unit and a multistage activated carbon adsorption unit, wherein the scrubbing tower is used for rinsing reduction tail gases, outputting siliconpowder-containing chlorosilane liquid from the column bottom and outputting non-condensable gas from the tower top; the circulating pump protection unit is used for removing silicon powder and impurities in the silicon powder-containing chlorosilane liquid and outputting chlorosilane liquid; the scrubbing tower circulating pump is used for pressurizing the chlorosilane liquid and feeding the liquid into the scrubbing tower to participate in rinsing; the dust removal unit is used for removing silicon powder in the non-condensable gas so as to obtain non-condensable gas subjected to dust removal; the multistage cooling unit is used for sequentially performing multistage cooling on the non-condensable gas subjected to dust removal, totally condensing the chlorosilane therein, feeding the chlorosilane into a chlorosilane condensate collection tank, and outputting impurity-containing hydrogen; the multistage activated carbon adsorption unit is used for performing multistage adsorption on the impurity-containing hydrogen output by the multistage cooling unit in sequence, obtaining pure hydrogen and feeding the hydrogen into a hydrogen buffer tank. According to the treatment device disclosed by the invention, the silicon powder in the reduction tail gases can be effectively reduced.

The invention discloses a phased array radar multifunctional sub-array beam forming network which comprises a primary sub-array beam forming network, two secondary sub-array beam forming networks and four tertiary sub-array beam forming networks. The primary sub-array beam forming network comprises a primary transmitting port and a primary receiving port, the two secondary sub-array beam forming networks comprise respective secondary transmitting ports and secondary receiving ports, the four tertiary sub-array beam forming networks comprise respective tertiary transmitting ports, tertiary receiving ports and TR (transmitting receiving) channel interfaces, two branch ports of the primary sub-array beam forming network are respectively connected with the two secondary sub-array beam forming networks, and four branch ports of the two secondary sub-array beam forming networks are respectively connected the four tertiary sub-array beam forming networks. Compared with the prior art, the phased array radar multifunctional sub-array beam forming network has the advantages that sub-array beams in different scales can be formed by the single phased array radar multifunctional sub-array beam forming network, and the sub-array beam forming networks in different scales can be simultaneously used and also can be individually used; the phased array radar multifunctional sub-array beam forming network is low in equipment quantity and has multiple functions.

The invention discloses a rotary swatting fire extinguisher, comprising an engine (3), a flexible shaft (4), a switch (5), a working rod (7) and a working head (8), wherein the engine (3) is connected with one end of the flexible shaft (4); the other end of the flexible shaft (4) passes through the working rod (7) with the switch (5) to be connected with the spindle (12) of the working head (8) of the front end; and the spindle (12) in the working head (8) is provided with a fire extinguishing soft belt driven by the spindle (12) to rotate. According to the technical scheme disclosed by the invention, workers carry the device to simultaneously quickly extinguish fire and clear a fire scene while the fire scene of a forest fire hazard is extinguished. The rotary swatting fire extinguisher has the advantages of good effect, low cost, and good market popularization and application value, can thoroughly clean, can avoid resurgence and can be quickly reloaded. The earlier the fire hazard is extinguished to eliminate the fire hazard hidden danger, the more loss for the nation and people is saved, and less pollution is reduced for the environment.

The present invention discloses a manufacturing process of a silicon solar cell. The manufacturing process of the silicon solar cell comprises the following processes of: laser drilling, texture surface making, diffusion, back etching, atomic layer deposition or plasma atomic layer deposition passivation coating, front antireflection layer coating and printing sintering. The laser drilling can beperformed prior to or after any one of the processes of texture surface making, diffusion and back etching. The process sequence of the atomic layer deposition or the plasma atomic layer deposition passivation coating and the front antireflection layer coating can be regulated according to the process requirement. The atomic layer deposition or the plasma atomic layer deposition process is employed to perform coating at one side of a battery piece or at the inner wall of a through hole, or the atomic layer deposition or the plasma atomic layer deposition process is employed to perform coatingat the two sides of the battery piece and at the inner wall of the through hole.

The invention discloses a small and efficient high-power solid-state modulator and belongs to the technical field of pulse power. The modulator comprises a solid-state modulator component and a pulse transformer (T), wherein the solid-state modulator component comprises a direct-current power supply (E1), an energy storage capacitor (C1) and a solid-state switch (V1). The direct-current power supply (E1) is used for charging the energy storage capacitor (C1). Output pulses of the modulator are obtained through the pulse transformer (T) after the energy storage capacitor (C1), the solid-state switch (V1) and the pulse transformer (T) form a discharge circuit. According to the small and efficient high-power solid-state modulator, the single solid-state switch is used, the equalization voltage and the connection consistency of the solid-state switch are not required to be considered, the voltage is low, insulation design can be achieved easily, the output waveform quality of the modulator is greatly improved, the circuit topological structure is simple, the size is small, the efficiency is high, modularization can be achieved easily, and the modulator is applicable to various platforms.

The invention provides an anemometric device and method based on GNSS autonomous velocity measurement, and relates to the field of satellite navigation. A GNSS receiver is used for implement single-point velocity measurement, and according to single-point position information and velocity information of the GNSS receiver as well as the relation between the wind velocity and the velocity information of the GNSS receiver, the high-altitude wind velocity, wind direction and wind profile are calculated and measured. According to the invention, anemometry is carried out without external high-precision auxiliary equipment, the complex degree of equipment is greatly reduced, the measuring precision is improved, and the anemometric device is simple in structure, practical, low in complex degree and wide in application.

The invention discloses a top charging device of a shaft furnace, which comprises a charging tank, an upper sealing valve arranged on an inlet of the charging tank, a material flow regulating valve arranged on an outlet of the charging tank, a lower sealing valve connected with an outlet of the material flow regulating valve, a bunker connected with a discharging hole of the lower sealing valve, and a distributor connected with an outlet of the bunker, wherein a uniform pressure relief interface is arranged in the charging tank. According to the top charging device of the shaft furnace, the uniform pressure relief interface is connected with a uniform pressure relief device, so that a pressure in the charging tank can be regulated to reach a required value, the charging operation is realized on the bunker or a region above the bunker under the working condition of normal pressure, the smooth charging of the shaft furnace under the working condition of pressure is realized; and the top charging device can carry out charging operation under the working condition of normal pressure. The top charging device of the shaft furnace has the advantages of compact and simple structure, less devices, and lower building cost; and a modular design is adopted, all single devices can be separately maintained, the maintenance time can be greatly saved, and the maintenance cost is lowered.