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CN-122001313-A - Microwave high-power synthesis method based on 4-channel signal shunt regulation and temperature compensation

CN122001313ACN 122001313 ACN122001313 ACN 122001313ACN-122001313-A

Abstract

A microwave high-power synthesis method based on 4 paths of signal shunt regulation and temperature compensation comprises the steps of 1, generating 4 paths of pre-amplified signals according to low-power microwave signals, 2, performing phase detection and amplitude detection on the 4 paths of pre-amplified signals in a shunt mode, performing temperature compensation and intra-threshold overshoot regulation to generate phase amplitude collaborative regulation parameters, 3, calculating temperature variation according to multi-point temperature data of key nodes of a synthesized link and comparing the temperature variation with a preset temperature variation threshold to generate corrected phase amplitude collaborative regulation parameters, 4, performing power superposition on the corrected phase amplitude collaborative regulation parameters by combining a reverse power suppression mechanism to generate combined power data, and 5, comparing the combined power data with a preset maximum power threshold, extracting amplitude fluctuation and phase deviation data based on comparison results to generate an optimized trigger signal until the combined power data reaches the preset maximum power threshold.

Inventors

  • ZHANG XIANGUO
  • CHEN RUI
  • SHEN GUOHONG
  • WANG CHAO

Assignees

  • 中国科学院国家空间科学中心

Dates

Publication Date
20260508
Application Date
20251229

Claims (10)

  1. 1. A microwave high-power synthesis method based on 4 paths of signal shunt regulation and temperature compensation is characterized by comprising the steps of 1, generating 4 paths of pre-amplified signals according to low-power microwave signals, 2, performing phase detection and amplitude detection on the 4 paths of pre-amplified signals in a shunt mode, performing temperature compensation and intra-threshold overshoot regulation to generate phase amplitude cooperative regulation parameters, 3, calculating temperature variation according to multi-point temperature data of key nodes of a synthesized link and comparing the temperature variation with a preset temperature variation threshold to generate corrected phase amplitude cooperative regulation parameters, 4, performing power superposition on the corrected phase amplitude cooperative regulation parameters by combining a reverse power suppression mechanism to generate combined power data, and 5, comparing the combined power data with a preset maximum power threshold, extracting amplitude fluctuation and phase deviation data based on a comparison result to generate an optimized trigger signal until the combined power data reaches the preset maximum power threshold.
  2. 2. The method of claim 1, wherein step 1 includes step 11 of bandpass filtering the low-power microwave signal to remove out-of-band interference components to generate a filtered signal, step 12 of first-stage high-gain low-power amplification of the filtered signal to raise the signal gain to a preset interval to generate a first-stage amplified signal, step 13 of sequentially performing second-stage and third-stage high-gain low-power amplification of the first-stage amplified signal to normalize the frequency spectrum and time sequence consistency to generate a third-stage pre-amplified signal, and step 14 of fourth-stage low-gain high-power amplification of the third-stage pre-amplified signal to generate a 4-way pre-amplified signal.
  3. 3. The method of claim 2, wherein step 12 includes amplifying the filtered signal with high gain and low power to generate a preliminary amplified signal, and performing reverse interference suppression and standing wave ratio correction on the preliminary amplified signal to generate a primary amplified signal, step 122.
  4. 4. The method of claim 1, wherein step 2 includes the steps of step 21 of extracting phase characteristics from the 4-way pre-amplified signal branches, generating a 4-way phase deviation matrix after comparing the phase characteristics with a preset reference phase, performing temperature detection and obtaining temperature data, performing temperature compensation, optimizing the phase parameters through an intra-threshold overshoot algorithm to generate 4-way phase adjustment subparameters, step 22 of detecting amplitude attenuation of the 4-way pre-amplified signal branches, performing temperature detection and obtaining temperature data, performing temperature compensation, optimizing the amplitude parameters through an intra-threshold overshoot algorithm to generate 4-way amplitude adjustment subparameters, and step 23 of fusing and dimensionality-adjusting the 4-way phase adjustment subparameters and the 4-way amplitude adjustment subparameters to generate the phase amplitude collaborative adjustment parameters.
  5. 5. The method of claim 4 wherein step 21 includes the steps of extracting phase eigenvectors from the 4-way pre-amplified signal branches to generate 4-way phase sample data, calculating offset values for the 4-way phase sample data and the preset reference phase vectors, respectively, and constructing a 4-way phase offset matrix based on the calculated values, and optimizing phase parameters by an intra-threshold overshoot algorithm after performing temperature compensation on the 4-way phase offset matrix to generate 4-way phase adjustment subparameters, step 213.
  6. 6. The method of claim 1, wherein step 3 includes the steps of calculating a temperature variation according to collected temperature data of key nodes of the synthetic link, comparing the temperature variation with a preset temperature variation threshold to generate a temperature variation state signal, performing gradient analysis on the temperature data, performing regression analysis on the temperature data by combining Wen Bianzhuang state signals with historical parameter drift data, constructing a temperature-phase/amplitude influence correlation matrix based on an analysis result to generate a temperature-parameter coupling model, and performing parameter correction on a phase amplitude cooperative adjustment parameter input temperature-parameter coupling model to generate a corrected phase amplitude cooperative adjustment parameter, wherein step 33 is performed.
  7. 7. The method of claim 6, wherein step 32 includes dividing the temperature data into intervals, analyzing the influence coefficients of the different intervals on the phase drift and the amplitude attenuation to generate a temperature influence weight matrix, and step 322 performing regression fit on the temperature influence weight matrix and the historical phase/amplitude drift data to perfect the temperature-parameter coupling model based on the fitting result.
  8. 8. The method of claim 1 wherein step 4 includes adjusting the phase and amplitude of each signal to achieve a quadrature equalization based on the corrected phase-amplitude co-adjustment parameters, and performing power superposition on the adjusted signals to generate a preliminary composite power signal, step 42 performing reverse power rejection and standing wave ratio correction on the preliminary composite power signal to generate an anti-interference composite power signal, and step 43 performing power data acquisition, amplitude calibration and phase verification on the anti-interference composite power signal, and generating composite power data based on the verification result.
  9. 9. The method of claim 8, wherein step 41 includes the step 411 of shunting the power superposition to the corrected phase-amplitude co-adjustment parameters to form the phase quadrature, amplitude balanced state of each signal to generate the network input signal, and the step 412 of performing 4 power superposition on the network input signal to generate the preliminary composite power signal.
  10. 10. The method of claim 1, wherein step 5 includes comparing the combined power data with a preset maximum power threshold, extracting amplitude fluctuation and phase deviation data based on the comparison result to generate an optimized trigger signal, analyzing the optimized trigger signal by combining Wen Bianzhuang-state signals, adjusting a phase amplitude adjusting parameter based on the analysis result to generate a phase amplitude optimizing parameter, analyzing a temperature influence rule by combining Wen Bianzhuang-state signals, updating a temperature compensating coefficient based on the analysis result to generate a temperature optimizing parameter, fusing the phase amplitude optimizing parameter with the temperature optimizing parameter, returning the temperature optimizing parameter to step 2 as an adjusting basis of a 4-path pre-amplification signal adjusting quantity, and iteratively executing steps 2 to 5 until the combined power reaches the maximum value.

Description

Microwave high-power synthesis method based on 4-channel signal shunt regulation and temperature compensation Technical Field The application relates to the technical field of microwave power synthesis, in particular to a microwave high-power synthesis method based on 4-channel signal shunt regulation and temperature compensation. Background The microwave high-power synthesis technology is widely applied to the fields of communication, radars, electronic countermeasure and the like, and in order to realize microwave output power of kilowatt level and above, a mode of synthesizing multipath low-power signals is generally adopted, and the synthesis efficiency, the power stability and the environmental adaptability are considered, so that high requirements are put forward on accurate regulation of the synthesis process especially under the working conditions of temperature change, signal drift and the like. In the existing microwave high-power synthesis scheme, the method generally comprises the steps of firstly carrying out primary amplitude adjustment on a single-channel signal, then directly combining the signals, and then carrying out integral phase calibration on the combined signals. The scheme firstly carries out single-stage amplification on the low-power signal, then adjusts the amplitude of the single-path signal, directly inputs the signal into a combining network to finish power superposition, and finally adjusts the overall phase parameter through a phase detection module after combining. However, this solution has obvious technical drawbacks. The integral phase adjustment is carried out after the combination, so that larger power loss is easily caused, a temperature compensation mechanism is not arranged for the multipath signal branching, when the temperature of a synthesized link is changed, the phase and amplitude drift of the signal cannot be accurately corrected, the maximum value of the synthesized power is reduced, and the efficiency and stability requirements under a high-power output scene are difficult to meet. Disclosure of Invention In order to solve the technical problems, the application provides a microwave high-power synthesis method based on 4-channel signal shunt regulation and temperature compensation, so as to at least alleviate the technical problems. A microwave high-power synthesis method based on 4 paths of signal shunt regulation and temperature compensation comprises the steps of 1, generating 4 paths of pre-amplified signals according to low-power microwave signals, 2, performing phase detection and amplitude detection on the 4 paths of pre-amplified signals in a shunt mode, performing temperature compensation and intra-threshold overshoot regulation to generate phase amplitude collaborative regulation parameters, 3, calculating temperature variation according to multi-point temperature data of key nodes of a synthesized link and comparing the temperature variation with a preset temperature variation threshold to generate corrected phase amplitude collaborative regulation parameters, 4, performing power superposition on the corrected phase amplitude collaborative regulation parameters by combining a reverse power suppression mechanism to generate combined power data, 5, comparing the combined power data with a preset maximum power threshold, and extracting amplitude fluctuation and phase deviation data based on comparison results to generate an optimized trigger signal until the combined power data reaches the preset maximum power threshold. The microwave high-power synthesis method based on 4-channel signal shunt regulation and temperature compensation aims at the technical defects of large power loss and reduced synthesis efficiency in temperature change caused by phase regulation after the traditional synthesis scheme is combined, and the problems of power loss in traditional post-combination regulation are solved by carrying out phase and amplitude detection regulation on 4-channel pre-amplified signals through the shunt. Compared with the traditional scheme of integral adjustment after combining, the method and the device have the advantages that the parameters of each path of signals are adjusted in a branching way, the phase and the amplitude of each path of signals can be matched more accurately, the power attenuation caused by adjustment after combining is avoided, and the power loss in the combining process is lower than that in the traditional scheme. By carrying out temperature compensation on parameters after the shunt adjustment, the problem that signal drift cannot be corrected in the traditional scheme during temperature change is solved. The traditional scheme does not set shunt temperature compensation for multipath signals, the temperature change phase and amplitude drift can reduce the synthesis efficiency, the temperature data of key nodes of a synthesis link are collected, and the temperature-parameter coupling model is constructed to correct the a