单站无源定位中角度变化率的测量方法研究  

Measurement method of angle changing rate in single-station passive location

作　　者：郭辉[1] 马宝宏[1] 侯庆禹[1] 

机构地区：[1]中国航天科工集团8511研究所,江苏南京210007

出　　处：《航天电子对抗》2011年第3期30-32,57,共4页Aerospace Electronic Warfare

摘　　要：讨论了单站无源定位中角度变化率测量的问题。首先简要介绍了差分法、最小二乘拟合法和卡尔曼滤波法的测量原理,其次为了解决滤波模型非线性的影响,提出了一种并行分段处理的卡尔曼滤波方法,最后从数字滤波的角度,通过设计相应的低通滤波器对估计获得的角度变化率数据流进行处理,进一步提高了角度变化率的测量精度。仿真实验对比分析了所述几种测量方法的性能及优缺点,并验证了提出的测量方法和数据处理方法的有效性。The measurement methods of angle changing rate are discussed in single-station passive loeation. Firstly, the measurement principles of difference, least square curve fitting and kalman filtering are introduced. Secondly, in order to resolve the effect of non-linear filter model, a parallel kalman filtering method with segment is proposed. Lastly, on view of digital filtering, corresponding low-pass filter is designed to proeess obtained data flow of angle changing rate, which can improve the measurement accuracy of angle changing rate. The performance of several measurement methods described is compared by simulation, and the resuits of the proposed method and digital filtering are verified.

关 键 词：单站无源定位 角度变化率 数字滤波 

分 类 号：TN97[电子电信—信号与信息处理]