扩频和高速数据信号的星间天线角跟踪系统设计

Design of Inter-satellite Antenna Angular Tracking System for Spread-spectrum and High-data-rate Signals

分析了中继卫星星间链路低速扩频和高速数据传输信号时,使用单通道单脉冲、有限个系统中频带宽档位、包络检波方法进行角跟踪的可行性,给出了角跟踪误差信号和信噪比计算公式、中频带宽的选取原则。结果表明,该方法适合所有星间链路信号类型的角跟踪,简化了星地控制。

The feasibility of an approach of singular channel monopulse, several IF bandwidth steps, envelope demodulation for TDRSS Inter - satellite Link （IOL） low - data - rate spreading spectrum and high - data -rate signals angular tracking are analyzed. The formulae of output angular error signal and angular signal - to - noise ratio （SNR） and the criteria of IF bandwidth selection are presented. The results show that this approach is fit for all IOL signal modes and can simplify the ground control of satellite.