43 results about "Matched load" patented technology

The invention discloses a method and equipment for improving matching of a measured piece in an attenuation measurement system, belongs to the field of radio metering, and comprises the method for improving matching of the measured piece in the attenuation measurement system, and the core of the method is that a precise matching absorption load is added in a front-end transmission system of the measured piece; energy transmission is realized on a waveguide wide side of the precise matching absorption load through a coupling hole; a transmission waveguide is additionally arranged above the coupling hole, and energy is transmitted to a measured piece in the forward direction; and a precise matching absorption load is added in the reverse direction to absorb energy in the reverse direction, so that the measured piece matching improvement equipment in the attenuation measurement system is formed, and finally the measured piece matching of the attenuation measurement system is improved. According to the method and the equipment, the impedance matching of the measured piece is improved by using the precise matching load, the voltage standing-wave ratio of the load level is realized, and the attenuation measurement accuracy is improved. The tested piece matching improvement equipment developed by using the method is directly connected to two ends of the tested piece in an attenuation measurement system, so that the impedance matching of the tested piece is improved.

The invention discloses a wide-range current output intelligent load matching capacitive load experiment system, which comprises a three-phase current monitoring module, a multi-stage capacitor load module, a parameter input module and a calculation control module, and is characterized in that the three-phase current monitoring module, the multi-stage capacitor load module and the parameter input module are electrically connected with the calculation control module; the three-phase current monitoring module comprises an A-phase current display unit, a B-phase current display unit and a C-phase current display unit and is used for collecting and displaying real-time current of corresponding phase lines of a three-phase experimental product in real time, and the problems that an existing capacitive load experimental system is narrow in current output range, poor in adaptability, low in intelligent degree, insufficient in long-period operation stability and the like are solved. Current can be accurately output in a wide range, loads are intelligently matched, multiphase products are compatible, experiment safety and stability can be guaranteed, and efficiency is improved.

The invention discloses an intelligent control method and device for an electronic transformer and a storage medium, and relates to the technical field of transformer control, and the method comprises the steps: obtaining the power demand information of a plurality of loads at the downstream of the electronic transformer, and obtaining the power demand information of each load based on the power demand information and the electrical characteristics of each load; generating a deterministic load sequence for defining a switching or power change plan of each load in a future time period; the core innovation of the invention lies in breaking through the traditional closed-loop regulation thought, and realizing open-loop feed-forward following control by obtaining a load plan in advance and generating a deterministic control curve. The key of the conversion lies in the accuracy of the deterministic load sequence, and the load demand can be accurately matched only when the load action is a control curve which can be planned and predictable in advance and is generated in advance, so that the output stability can be ensured without real-time feedback adjustment.

According to an example aspect of the present invention, there is provided an antenna array arranged to control a radar response of a target, comprising multiple ultra wideband antennas, wherein each of said multiple antennas is coupled to a separate switch, and each switch is arranged to control one of said multiple antennas such that when said one antenna is connected to a load, preferably matched load, said one antenna acts as an absorber, and when said one antenna is electrically shorted, said one antenna acts as a reflector, wherein at least one of said multiple antennas is arranged to be electrically shorted at a first time instant and the at least one of said multiple antennas is arranged to be connected to a load, preferably matched load, at a second time instant, and at least one other of said multiple antennas is arranged to be connected to a load, preferably matched load, at the first time instant and the at least one other of said multiple antennas is arranged to be electrically shorted at the second time instant.

The present disclosure relates to a calibration system for a vector network analyzer (VNA), having a plurality of N ports. The calibration system comprises a distribution unit having a plurality of D≤N ports; and a plurality of D≤N calibration units, respectively comprising a calibration circuit having first, second and third ports and an isolation circuit having first, second and third ports. For the respective calibration unit, the calibration circuit is configured to provide at least three different one-port calibration standards, such as open, short and match; the first port of the calibration circuit is arranged for being connected to a respective port of the VNA, the second port of the calibration circuit is connected to the first port of the isolation circuit, the third port of the calibration circuit is connected to a first matched load; the second port of the isolation circuit is connected to a respective port of the distribution unit, and the third port of the isolation circuit is connected to a second matched load. The distribution unit is configured to connect any one of its ports with all other of its ports.

The application discloses a kind of calibration chip sets for calibrating error factor of chip to be measured, the calibration chip set includes short-circuit calibration chip, open-circuit calibration chip, matching load calibration chip and straight-through calibration chip, any calibration chip in the calibration chip set is identical with the size of the chip to be measured, wherein the test pin of the short-circuit calibration chip is short-circuit connected with the ground metal layer itself;The test pin of the open-circuit calibration chip is open between the ground metal layer itself;The test pin of the matching load calibration chip is connected with the ground metal layer itself through load resistance;Two test pins of the straight-through calibration chip are electrically connected between the two test pins of the straight-through relationship on the straight-through calibration chip.The calibration chip used in the application directly sets the calibration reference surface of the vector network analyzer at the pin of the packaged chip, without additional consideration of the parasitic parameter introduced by the test fixture, improves the test accuracy of the chip, simplifies the calibration step and test data processing process.

The invention discloses a calibration method suitable for a mechanical linear scanning SAR (Synthetic Aperture Radar) imaging system, which belongs to an image processing technology, and comprises the following steps: enabling a transmission parameter measured by a vector network analyzer to be equivalent to a reflection measurement parameter of a single port, and establishing a mathematical model containing a directivity error, a reflection tracking error and a source matching error; matching load calibration and short-circuit load calibration are respectively carried out by using a free space and a large-size metal flat plate, and equivalent emission parameters of the vector network analyzer are obtained; performing time domain gate gating processing and error term solving according to the equivalent emission parameters; and substituting the solved directivity error, reflection tracking error and source matching error into the mathematical model, and carrying out error calibration. The method can adapt to dynamic working characteristics of mechanical scanning, is simple and convenient to operate, and can accurately peel off system errors.

The application discloses a transverse feedback excitation device with high shunt impedance and horizontal light extraction, and belongs to the technical field of particle accelerators. The device comprises a beam position probe (BPM), an RF front end, an ADC module, a digital signal processing module, a DAC module, a power divider, a power amplifier, a low-pass filter, an exciter (Kicker) and a matching load. The exciter Kicker has four electrode strips located on both sides of the beam center line and parallel to each other, two electrode strips on the same side are connected in parallel, the characteristic impedance of a single electrode strip is 100Ω, and the equivalent total characteristic impedance after parallel connection is 50Ω; the four electrode strips are distributed in a quadrangular symmetry in the cross section of the vacuum chamber and avoid the horizontal median plane, so as to form an open light path channel. The application improves the shunt impedance of the exciter, reduces the radio frequency power demand, realizes impedance matching with a standard 50Ω system, and guarantees the horizontal unobstructed extraction of the synchrotron radiation light.

The invention belongs to the technical field of thermoelectric power sensors, and particularly relates to a terahertz thermoelectric power sensing chip, a thermoelectric power sensor and application. The structural form of the chip is a heat insulation layer / absorption layer / isolation layer / thermopile / isolation layer / direct current resistor / heat insulation layer. The terahertz signal power absorbed by the absorption layer causes the temperature change of the absorption layer; the thermopile determines the incident power of the terahertz signal by determining the temperature variation of the absorption layer; generalized efficiency is used as the correction calibration amount of the power transmission standard by the direct-current resistor. The terahertz thermoelectric power sensing chip provided by the invention is applied to a thermoelectric power sensor, and the sensor adopts a high-precision and low-standing-wave ultra-wideband waveguide matching load to absorb high-frequency microwave signal power, so that the problem that the measurement frequency of a power meter is limited is solved; the measurement frequency range of the waveguide type thermoelectric power sensor is expanded to 1.1 THz, and the waveguide type thermoelectric power sensor can be used for measuring terahertz signals.

The invention discloses a synthetic aperture radiometer on-orbit antenna stability correction method, which comprises the following steps of: calibrating two parameters of receiver on-orbit gain and equivalent noise temperature through a single standard calibration source by utilizing a receiver on-orbit observation matching load and combining a receiver calibration parameter acquired by a laboratory; receiver calibration parameters are reversely transmitted to an antenna output end face, forward modeling is carried out to an antenna input end face in combination with an observation scene, an antenna loss calculation model is constructed by adopting apparent temperatures of the antenna input end face and the antenna output end face, loss parameters of an antenna are calibrated in an on-orbit mode, and the antenna loss is obtained by adopting three times of cold air calibration. According to the method, the characteristic model that the antenna loss changes along with the physical temperature is constructed, meanwhile, the antenna loss is corrected in real time at any physical temperature of the on-orbit antenna, correction of the stability of the on-orbit antenna is completed, and the stability of an on-orbit data product of the synthetic aperture radiometer is effectively improved.

The invention discloses a packaged data transmission optimization method and system based on an eMMC protocol CMD23 instruction, and relates to the field of embedded storage equipment. The method comprises the following steps of: 1, dynamically calculating an optimal packing block number, and packing and transmitting data according to the optimal packing block number; 2, independently controlling a forced programming bit FP / a reliable writing bit RW, writing key data into a flash memory, and detecting the integrity of transmission data; 3, setting a sequence guarantee buffer area for transmitting data, and regularly writing contents in the sequence guarantee buffer area into an RPMB partition of the eMMC equipment; and step 4, comparing the read transmitted data with the original to-be-transmitted data, and verifying the integrity of data transmission. According to the dynamic block counting algorithm, I / O loads can be matched in real time, on the premise that an eMMC protocol bottom layer is not modified, the bus bandwidth utilization rate is greatly improved, the problem of low efficiency of traditional static packaging is solved, and the data transmission reliability is improved through a double-flag-bit cooperation + SQB power failure protection mechanism.

The invention discloses an ultra-short matched load, which adopts a profile metal tube and two or more absorbers, the shape of the absorbers is one or as few as possible, preferably, the absorbers are rectangular, and a plurality of abruptly changed reflecting surfaces are formed along the axis of a waveguide tube by changing the placement positions and orientations of different absorbers. Compact, broadband and low-cost ultra-compact matched loads are obtained by utilizing mutual superposition and counteracting of reflection of electromagnetic waves on the surfaces. The invention can be used for various electromagnetic wave processing systems, such as industrial electromagnetic wave furnaces and electromagnetic wave tunnel furnaces, and is used for puffing, sterilizing, deep drying, sintering and the like of materials.

The invention discloses a miniaturized high-gain millimeter wave waveguide slot array antenna, which comprises a one-to-two waveguide power divider and a metal waveguide tube, and is characterized in that the one-to-two waveguide power divider is mounted at the head of the metal waveguide tube in a butt joint manner and is used for feeding two ports of the metal waveguide tube with equal amplitude and same phase; the metal waveguide tube is a standard Ka wave band waveguide tube, a wave absorbing material is embedded in the tail portion of the metal waveguide tube, the tail portion of the metal waveguide tube is blocked through a metal sealing plate, and the metal sealing plate is used for carrying out short circuit on the upper bottom face and the lower bottom face of the tail portion of the metal waveguide tube and forms a matched load together with the wave absorbing material to adjust antenna impedance matching. Two columns of round-head strip-shaped gaps are symmetrically etched in the metal waveguide tube in the longitudinal direction, each column of round-head strip-shaped gaps comprises 20 round-head strip-shaped gaps which are etched at equal intervals, and the offset of the 20 round-head strip-shaped gaps in the same column relative to the waveguide center axis is calculated according to Taylor distribution.

The application provides an array antenna mutual coupling calibration method and system based on spatial multi-scale feature decoupling, relates to the technical field of antenna testing, and comprises the following steps: placing a target antenna array in a full-wave anechoic chamber, connecting two ports to a vector network analyzer, and terminating the remaining ports with a matching load; measuring and obtaining the transmission coefficient between the two ports in a preset working frequency band to represent the coupling strength between the ports; repeatedly performing the measurement operation on multiple port pairs to obtain a scattering parameter matrix representing the mutual coupling effect; and comparing the scattering parameter with a preset technical index to determine whether the antenna isolation meets the requirements. The application can comprehensively and accurately represent the mutual coupling effect of a multi-channel antenna, avoid errors caused by reflection interference in the testing process, realize rapid determination and quality control of the isolation performance, and provide a reliable basis for the design optimization and engineering application of a base station antenna.

The invention relates to the technical field of wireless testing, in particular to an antenna radiation sensitivity testing method and device, terminal equipment and a storage medium. The method comprises the steps that a radio frequency interface of a tested device is connected with a first output port of a radio frequency power divider, an input port of the radio frequency power divider is connected with a radio frequency port of a wireless comprehensive tester, and a second output port of the radio frequency power divider is externally connected with a matched load; traversing all target wireless channels, and measuring and recording the conduction sensitivity of the tested equipment under each channel as the reference sensitivity; the second output port is changed to be connected with a matched antenna, a low-noise amplifier is connected between the matched antenna and the radio frequency power divider in series, and the gain of the low-noise amplifier is equal to the insertion loss of the radio frequency power divider; traversing all target wireless channels, and measuring and recording the equivalent radiation sensitivity of the tested equipment under each channel; and calculating the difference between the reference sensitivity and the equivalent radiation sensitivity under the same channel to obtain the radiation sensitivity deterioration degree of the tested equipment.

The invention provides a radio frequency front-end circuit, a communication module, communication equipment, a control method and a storage medium, and relates to the technical field of communication. Through time slot level switching control of the first switching circuit, a port of a transmitting filter of the duplexer is connected to a matched load in a receiving time slot of an HD-FDD mode, and the duplexer is ensured to be always in a good three-port matching state in a non-transmitting time period, so that FDD and HD-FDD dual-mode work is simultaneously supported on the basis of multiplexing a single duplexer, and the dual-mode working efficiency of the duplexer is improved. An independent hardware path does not need to be additionally configured for the HD-FDD mode, the radio frequency front-end architecture is effectively simplified, and the cost and the size are reduced.

Embodiments of the present application relate to the technical field of computer, and disclose a team matching method and device based on game, medium and product. The method comprises: determining a team score of a matching team according to a teaming request of a player; the matching team is used to represent a basic battle unit generated based on the teaming request; dynamically calculating a segment width according to a current number of online players; determining a dynamic segment set according to the team score and the segment width; wherein the segment set is an elastic matching interval set based on dynamic adjustment of a segment boundary and the segment width according to real-time matching load; and determining a multi-team matching result according to the dynamic segment set. At least the technical problem of rigid rules in related technologies can be solved.

The application discloses a kind of composite broadband microvibration energy acquisition adaptive power management and power supply circuit system, comprising: transducer signal separation acquisition module, makes piezoelectric and electromagnetic two-way signal from source physical isolation;First, second impedance matching rectifier module, extract band energy characteristics from respective rectification output ripple, dynamically adjust equivalent input impedance in feedforward mode;Power fusion module, by controlled MOSFET realizes the one-way low-loss merging of two-way direct current power;Hybrid energy storage and charging path scheduling module, according to bus power level automatically switches between sequencing charging state;Transient power distribution and load state detection module, to pure hardware timing distinguishes network matching load current transient characteristics, realizes power supply trigger and shutdown.The application makes impedance matching response and vibration spectrum change synchronous, avoids double-source cross interference and energy storage boundary oscillation, is independent of digital protocol, realizes the autonomous perception and precision power distribution of load task.

The present invention is a microwave artificial diamond production device, which comprises a reaction container and a microwave emission module. A diamond seed is placed in the reaction container. The microwave emission module comprises a mode conversion tube, a guide tube, a first waveguide tube and a first linear polarization microwave source, and a second waveguide tube and a first matching load connected in sequence. The mode conversion tube is connected to the reaction container and can convert microwave between circular polarization mode and linear polarization mode. The guide tube has a first opening and a second opening which are not parallel and are connected to the first waveguide tube and the second waveguide tube respectively. The first linear polarization microwave source is arranged in the first waveguide tube, and the first matching load is arranged in the second waveguide tube. In this way, the reflected microwave in the reaction container which is not used can be absorbed by the first matching load, thereby improving the diamond production efficiency.

The invention, which relates to the technical field of terahertz communication, discloses a dual-polarization double-sideband terahertz front-end receiving system comprising a frequency multiplier, an orthogonal mode converter, an unmatched load coupler, a frequency mixer, a coupler and a low-pass filter. The working frequency of the receiving system is 640 GHz, and the receiving system has multiple functions of frequency mixing, frequency doubling, wave detection, power distribution, coupling, polarization rotation and the like. Compared with a traditional single-polarization receiving structure, the system can receive two kinds of polarization signals at the same time, the instantaneous bandwidth is improved through sideband separation, local oscillator noise and mirror image sideband noise are effectively restrained through the balanced mixer, and therefore the sensitivity of the system is improved. In addition, a traditional plane chain type framework is optimized into a longitudinal stacking framework, high integration of a passive circuit and an active circuit is achieved, and the application requirements of high performance and high integration degree are met.

The application discloses an intelligent control method and device of an electronic transformer and a storage medium, relates to the technical field of transformer control, and comprises the following steps: acquiring power consumption demand information of a plurality of loads downstream of the electronic transformer, and generating a deterministic load sequence defining load switching or power change plans of the loads in a future period based on the power consumption demand information and electrical characteristics of the loads; the core innovation of the application is to break through the traditional closed-loop regulation idea, to realize open-loop feedforward following control by acquiring the load plan in advance and generating a deterministic control curve. The key to this conversion lies in the accuracy of the deterministic load sequence. Only when the load action is planable and predictable in advance, the pre-generated control curve can accurately match the load demand, thereby ensuring output stability without real-time feedback regulation.

The invention relates to a circular waveguide on-line high-power microwave coupling measurement device and method, belongs to the technical field of high-power microwave measurement, solves the technical problems of inaccurate measurement result and complex structure in microwave coupling measurement, and comprises a circular waveguide, a coupling waveguide, an auxiliary waveguide, a rectangular waveguide, a sealed waveguide coaxial converter and a sealed matching load. The coupling waveguide is located between the two circular waveguides, the center line coincides with the center line of the circular waveguide, and the coupling waveguide and the circular waveguide are in fillet transition. The coupling waveguide is provided with a coupling hole and is communicated with the rectangular waveguide of the auxiliary waveguide through the coupling hole. The circular waveguide is a transmission waveguide and is used for transmitting a high-power microwave signal; the coupling waveguide is used for sampling high-power microwave signals in the coupler main line and feeding the high-power microwave signals into the coupling hole. The method comprises the steps that in the microwave output channel, microwaves are coupled to the rectangular waveguide of the auxiliary waveguide through the coupling hole, then pass through the waveguide coaxial converter, the attenuator and the detector, and finally are transmitted to the oscilloscope through the coaxial cable.

This invention discloses a transverse feedback excitation device with high shunt impedance and horizontal light extraction, belonging to the field of particle accelerator technology. The device includes a beam position detector (BPM), an RF front-end, an ADC module, a digital signal processing module, a DAC module, a power divider, a power amplifier, a low-pass filter, an exciter (Kicker), and matching loads. The exciter (Kicker) has four parallel electrode strips located on both sides of the beam centerline, with two strips on the same side connected in parallel. Each electrode has a characteristic impedance of 100Ω, resulting in an equivalent total characteristic impedance of 50Ω after parallel connection. The four electrode strips are symmetrically distributed at the four corners within the vacuum chamber cross-section, avoiding the horizontal midplane to form an open optical path. This invention improves the shunt impedance of the exciter, reduces the RF power requirement, achieves impedance matching with a standard 50Ω system, and ensures unobstructed horizontal extraction of synchrotron radiation light.

The invention discloses an intelligent control electric cabinet power supply data remote supervision system and method based on intelligent control illumination, and relates to the technical field of power supply data supervision. Historical load data of an intelligent control electric cabinet is classified, the visitor flow rate of each region is monitored in real time, the load demand is matched, and the maximum load fluctuation value of the intelligent control electric cabinet is obtained; the actual load data and the maximum load fluctuation value of the intelligent control electric cabinet are actually obtained, the load of each area is calculated by using the high rated load buffer, and the calculated load is used for correspondingly regulating and controlling the load of the intelligent control electric cabinet to control the illumination area, so that the large load fluctuation of the intelligent control electric cabinet is avoided, and the illumination efficiency is improved. The phenomenon that the lighting equipment flickers or is damaged is avoided, so that the lighting equipment is protected, the system records load fluctuation in real time and gives an early warning of load insufficiency in time, and load distribution of the electric cabinet is regulated, controlled and optimized through periodic load balance. According to the method, the stability and efficiency of the intelligent control electric cabinet are improved, and accurate management and adjustment of the load are realized.

The invention discloses a receiving channel temperature sensitivity on-orbit test and stability correction method based on a synthetic aperture radiometer, and the method comprises the steps: firstly, obtaining the self-correlation value and temperature data of a channel in a cold air observation state and a matched load state through an on-orbit cold air calibration mode before and after the temperature change of the receiving channel is precisely controlled and measured; then, on the basis of a radiometer measurement model, the gain and background noise of each channel at different temperatures are solved, and then the sensitivity coefficients of the gain and background noise of each channel to temperature changes are calculated; based on the coefficient, in conventional observation, according to a real-time channel temperature measurement value, channel gain and background noise drifting after calibration are corrected in real time, and therefore accurate observation brightness temperature is obtained. The method effectively solves the problem that the measurement precision of the receiving channel of the synthetic aperture radiometer is reduced due to temperature drift, and is particularly suitable for a microwave radiometer system needing long-term in-orbit high-precision work.

The application provides a standardizer circuit applied to CAT 6A far-end crosstalk, which avoids the parasitic crosstalk in the prior art and improves the performance of the standardizer circuit by disconnecting all the paths irrelevant to the far-end crosstalk test and connecting a series matching load. The application also provides a standardizer applied to CAT 6A far-end crosstalk and adopting the standardizer circuit.

This invention discloses an on-orbit calibration method for phased array antennas based on GNSS signal carrier phase, comprising: Step 1: Traversing each antenna element in the phased array antenna array and performing the following processing: Selecting only one element under test at a certain moment through the microwave switching network of the phased array antenna, and connecting the remaining elements to a matched load; Simultaneously acquiring carrier phase observations of the same GNSS satellite signal through the load positioning antenna and the element under test; Performing a first differential processing on the carrier phase observations of the load positioning antenna and the element under test to eliminate external space propagation errors and system clock errors; Step 2: Using the first differential result of the first antenna element in the array as a reference, performing a second differential processing with the first differential results of other antenna elements in the array to eliminate internal hardware channel errors; Repeating steps 1 and 2 until each antenna element is differentially processed twice to obtain the relative additional phase error of each antenna element, thus completing the calibration.

The application discloses a kind of big computing power data center failure early warning intelligent response method, it is related to alarm system technical field;Including the following steps: deployment distributed sensor network and monitoring agent, collect hardware, environment, power, network parameter, dynamic adjustment acquisition frequency;Data is handled using filtering, normalization technique, in combination with algorithm to identify abnormal points, generate standardized dataset;Depth learning model is constructed, match fault type, divide early warning level, dynamically optimize threshold value;Establish fault and response mapping library, match load migration and other measures, support priority ordering through industrial ethernet to issue instructions, realize multi-device cooperation, feedback execution status;Compare parameters before and after failure, evaluate effectiveness, trigger secondary response.The application realizes multi-dimensional fault accurate early warning, response is fast and efficient, and the ability of cross-device cross-region collaborative linkage is strong, model self-optimization iteration continuously improves performance, reduces business interruption and secondary fault, reduces operation and maintenance cost.

The application discloses a permanent magnet synchronous motor flux linkage observer parameter compensation method based on an improved hybrid beluga optimization algorithm, proposes a customized improved HBWO algorithm for a flux linkage observation scene, and realizes 3-dimensional compensation factors through the algorithm. Firstly, the harmonic compensation factor is used for harmonic cancellation of the shaft voltage signal, and high-frequency interference in the electric signal is suppressed. Secondly, the resistance compensation factor is used for dynamic correction of the stator resistance parameter, and resistance drift caused by motor temperature change is adapted. Thirdly, the inductance compensation factor is used for real-time updating of the stator inductance parameter, and inductance change caused by load fluctuation is matched. The optimization factor is embedded into an error preprocessing link and a parameter correction link of the flux linkage observer, noise reduction of the observer input signal and adaptive updating of core parameters are realized. Compared with the prior art, the application effectively improves the precision and stability of the flux linkage observer, and is suitable for high-precision control scenes of the permanent magnet synchronous motor under the conditions of medium and high speed and variable load.

The invention discloses a blackbody emissivity real-time monitoring device for a satellite-borne microwave radiometer, and the device comprises a feed source which is used for receiving microwave radiation energy emitted by a blackbody; the matching load is used for generating a low-radiation brightness temperature signal of the low-temperature subject matter; the noise source is used for generating a high-radiation brightness temperature signal of the high-temperature subject matter; the radiation receiver is used for receiving the blackbody microwave radiation energy or the low-radiation brightness temperature signal or the high-radiation brightness temperature signal to obtain a blackbody radiation electric signal corresponding to the blackbody microwave radiation energy or a low-temperature electric signal corresponding to the low-radiation brightness temperature signal or a high-temperature electric signal corresponding to the high-radiation brightness temperature signal; the switch is used for selectively connecting the radiation receiver with the feed source or the matched load or the noise source; a data acquisition unit, the acquisition module is used for acquiring the blackbody radiation electric signal or the low-temperature electric signal or the high-temperature electric signal to obtain a blackbody radiation remote sensing signal corresponding to blackbody microwave radiation energy or a low-temperature remote sensing signal corresponding to the low-radiation brightness temperature signal or a high-temperature remote sensing signal corresponding to the high-radiation brightness temperature signal; and the radiation calibration unit is used for receiving the low-temperature remote sensing signal or the high-temperature remote sensing signal or the black body radiation remote sensing signal and obtaining the temperature value and the emissivity of the black body through calculation.