一种航天器单脉冲差模角跟踪系统的标定及测试方法

Calibration and Test Method for Spacecraft Monopulse Difference Mode Angular Tracking System

介绍了航天器单脉冲差模角跟踪系统的组成和基本原理;针对捕获跟踪系统性能与射频通道相位特性的相关性,提出了在无线状态下通过用户目标在一定范围内按一定轨迹运动进行射频通道相位标定及跟踪性能测试的方法;在此基础上进一步提出了利用信号源模拟用户目标在角跟踪系统天线坐标系下不同位置时天线输出的射频信号,进行有线状态下射频通道性能的测试方法。标定及测试方法通过地面试验验证了可行性和有效性,可用于航天器单脉冲差模角跟踪系统在地面的通道相位标定、跟踪性能测试和射频通道性能测试,以实现角跟踪系统对用户目标高精度、稳定的跟踪。

The composition and fundamental theory for spacecraft monopulse difference mode angular tracking system is introduced. According to the correlation between system performance and RF channel phase, a kind of wireless RF （radio frequency） channel phase calibration and tracking function test method is proposed. And this method is realized through user＇s moving along a scheduled track in a certain range. Based on the method for wireless RF channel, a wired RF channel test method for angular tracking system is put forward. Wired RF channel test method is realized by using signal source to simulate the RF output of antenna with target user being at different position. These methods are validated for their feasibility and validity, which can be applied to the calibration and test for spacecraft monopulse difference mode angular tracking system on the ground to achieve high-precision and stable tracking of angular tracking system to target user.