辐射时序对单站无源跟踪性能的影响

针对射频隐身平台采取辐射时序控制的情况，以基于角度/相位差变化率/多普勒频率变化率的单站无源跟踪为例，研究了辐射时序与跟踪性能的影响关系。在辐射源做匀速运动的假设下，采用克拉美劳下界方法，建立了辐射时序对跟踪性能的影响模型。模型综合考虑了辐射时序、观测量误差、导航误差等因素，与具体的跟踪算法无关，因此具有实用性和客观性。基于影响模型的仿真分析，揭示了辐射时序不同特征对跟踪性能的影响规律，为射频隐身平台辐射时序设计提供了初步的理论指导。

Effect of radiation time sequence on passive tracking with single observation platform

The influence relation between radiation time sequences and the tracking performance is investigated where the single-platform passive tracking system based on the observed quantities including angles of arrival, phase difference change rates, and Doppler frequency change rates, is taken as an example. It is well suited for the case that radio frequency stealth platforms perform the radiation timing control. The influence model is presented by utilizing the method of Cramer-Rao Lower Bound(CRLB) under the assumption that the radiation target moves uniformly along one direction. This model has attractive features because it takes several factors fully into account, such as radiation time sequences, measurement errors and navigation errors, and it is also irrelevant to specific tracking algorithm. Finally,simulation results illustrate the influences of different radiation time sequence characteristics on the tracking performance, and provide a promising guidance for the radiation timing design on radio frequency stealth platforms.