Relay capturing and tracking external field test simulation system and method based on channel simulation technology

Abstract

The invention discloses a relay capturing and tracking external field test simulation system and method based on a channel simulation technology. The method comprises the following steps: extracting three channel simulation parameters, namely attenuation, phase and frequency, of a capturing and tracking beacon signal based on a monopulse tracking principle; a computer is assisted in comprehensive processing and control, and a beacon signal capturing and tracking amplitude model is constructed according to sum-difference signal directional diagram characteristics of the relay antenna; inversely calculating a capturing and tracking beacon sum-difference signal phase according to a preset angle, correcting zero value data of a simulation system to form a simulation parameter at the current moment, adding frequency deviation, driving a channel simulator to update three coherent parameters in real time and run back and forth, receiving real-time feedback information of an actual rotation angle of a satellite relay capturing and tracking system through the simulation system. The closed-loop dynamic simulation of capturing and tracking beacon signals in a relay capturing and tracking external field test scene is achieved; according to the invention, high-fidelity simulation of the beacon signal of the capturing and tracking system is realized, multi-purpose application can be satisfied, and the method is suitable for application of a monopulse tracking system angle measurement system.

Description

technical field [0001] The invention relates to a relay capture and tracking field test simulation system and method based on channel simulation technology, belonging to the technical field of relay capture and tracking systems. Background technique [0002] In order to ensure the verification of system performance, the relay capture and tracking system usually needs to organize large-scale field tests for verification and evaluation. There are many objective and practical outstanding problems in the traditional test method, such as high site requirements (special equipment such as wireless special site, turntable and absorbing wall), long test period (usually 1-2 weeks), and large investment in manpower and material resources. (Product and test tooling preparation and transfer, test assembly management by multiple personnel), serious conflicts in resource use, especially the verification and evaluation of the overall tracking performance of the system is often postponed to ...

AI Technical Summary

Problems solved by technology

There are many objective and practical outstanding problems in the traditional test method, such as high site requirements (special equipment such as wireless special site, turntable and absorbing wall), long test period (usually 1-2 weeks), and large investment in manpower and material resources. (Product and test tooling preparation and transfer, test assembly management by multiple personnel), serious conflicts in resource use, especially the verification and evaluation of the overall tracking performance of the system is often postponed to the field test stage, and can only be carried out in the stand-alone and sub-system wired stages Qualitative functional performance test verification, which leads to the failure of some indicators to expose the risk of out-of-tolerance as soon as possible, and early correction often brings great pressure to the follow-up development progress of the model

The objective realities of high cost, long period, manpower consumption, and difficulty in implementation of the field test of the relay capture and tracking system seriously restrict the cost and progress of system development

[0003] "A design method for self-tracking signal source of single-channel single-pulse system", patent number CN200910175496.5, this patent uses complex baseband processing equipment to generate modulation signals as beacon signals, and only has Doppler frequency, The simulation of the angle error voltage does not have the simulation of the phase and signal amplitude characteristics, and the high-fidelity and comprehensiveness of the simulation is insufficient

In addition, there is no interaction between the simulation system and the system under test, and it is an open-loop system, which cannot achieve tight coupling with the system under test

[0004] "Method and device for testing mobile radio equipment by means of static channel simulation", patent number CN102204135B, this patent is mainly aimed at channel simulation for wireless testing of communication systems, and the simulation is limited to static channels, and cannot realize the simulation of near real-time dynamic characteristics of channels

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