摘要
针对塔康机载设备模拟体制庞大,现有方位解算方法过程复杂、精度不高等问题,基于软件无线电思想,对塔康机载设备进行中频数字化,提出了一种Kalman滤波提取包络信号的方位精确解算方法。首先采用状态空间描述法,详细推导了塔康包络信号的观测方程和状态方程参量的表达式,建立了塔康包络信号的观测方程和状态方程。然后设计了提取塔康包络信号的Kalman滤波模型,给出了提取包络信号的流程以及方位求解算法。最后经装备模拟器验证表明:所设计的方法过程简单,解算方位精度高,算法完全适用于实装工程的实现。
For the problem that TACAN airborne equipment is huge in analog system and that the calculat- ing method of TACAN bearing signal is complex in calculating process and low in precision , this paper presents an accurate method of calculating the bearing settlement using Kalman filtering distill envelope signal based on the ideal of software radio and IF digital processing. Firstly, this paper adopts the method of state space description to derive in detail the expressions o{ various parameters in the observation equa- tion and state equation of envelope signal, then, designs the Kalman filtering model of distill envelope sig- nal,extracts the envelope signal process and the method of calculating bearing. Finally, the experiment re- sult of equipment simulator shows that the designed method is simple in process, accurate in calculating bearing precision and is applicable to the practical equipment.
出处
《空军工程大学学报（自然科学版）》
CSCD
北大核心
2013年第2期76-80,共5页
Journal of Air Force Engineering University(Natural Science Edition)
基金
陕西省自然科学基金资助项目(2010JM8037)
陕西省电子信息系统综合集成重点实验室基金资助项目(201111Y09)
关键词
塔康
中频数字化
卡尔曼滤波
方位解算
TACAN IF digital processing Kalman filtering calculating bearing
