DS/FH测控系统综合性能评估方法研究

A Synthetic Performance Evaluation Method for DS/FH TT&C Systems

针对传统方法对DS/FH(直接序列扩频/跳频扩频)系统的综合性能测试不够全面有效的问题,提出通过最低性能指标约束法对系统抗干扰性能进行综合分析。以音调干扰、窄带噪声和脉冲干扰3种典型干扰为例,探讨了这3种干扰在不同参数条件下对最低性能指标的影响。并且进一步分析了动态条件下多普勒频偏对DS/FH系统捕获性能的影响。为便于对系统的综合性能进行定量分析,给出最低性能指标约束下的系统综合性能评价指标。最后通过实例分析说明了系统综合性能评估方法的正确性与有效性,该方法对DS/FH这一复杂系统的测试具有指导意义。

To provide better evaluation of the anti-jamming performance of DS/FH TT＆C （Tracking, Telemetry and Command） systems under jamming conditions, a synthetic analysis method based on MPC （Minimum Perform- ance Constraint） is presented. The influence of different parameters of jamming on the minimum performance speci- fications is discussed taking as examples three typical types of jamming, namely, tone jamming, band-limited noise and pulse interference. Furthermore, the effect of Doppler frequency offset on acquisition performance in high dy- namic conditions is analyzed. For quantitative analysis of synthetic performance, three evaluation indexes are pro- posed under MPC. Analysis with a practical example shows that the proposed model is correct and effective and it is of high significance for tests of the performance of DS/FH TT＆C systems.