一种在紧缩场进行捕获跟踪试验的方法

为满足不断增长的天基中继业务需求,航天器星间链路常使用大口径高增益天线,且配置自动捕获和跟踪设备,以完成对目标航天器的自动跟踪.随着天线口径的增大,对场地空间要求不断增大,地面验证试验变得愈加困难.针对越来越难以实现的捕获跟踪外场试验,提出一种在紧缩场进行捕获跟踪试验的方案,方案详细分析了在紧缩场进行试验的可行性.通过设置跟踪通道校相因子,很好地分离了角误差信号,获得良好的S曲线以及非常小的交叉耦合,从而验证了在紧缩场进行捕获跟踪试验是可行的.相对于传统的远场测试方法,该方法具有不受气候影响、费用低等优点.

A Method for Acquisition and Tracking Tests at a Compact Test Range

To meet the growing demand for space-based relay service,large aperture antennas with high gain are usually used in inter-satellite links and automatic acquisition and tracking equipment are equipped for automatic tracking of target satellites.Ground validation tests are more and more difficult because increasing antenna aperture requires larger and larger test ranges.An acquisition and tracking test method in a compact test range is introduced to solve the problem.The feasibility of such tests at a compact test range is demonstrated with a fine S-curve and very small cross-coupling by setting up phase-correction factors for the tracking channel and isolating the angular error signal.Compared with the conventional far field test method,the proposed method is not influenced by weather and is less costly.