基于外辐射源的单站无源定位跟踪算法

Algorithm in single observer passive location and tracking based on opportunity transmitter

基于外辐射源的无源定位系统是以电视或调频广播的发射机等作为其辐射源的,具有反侦察、抗干扰、反隐身、抗反辐射导弹等优势。根据基于外辐射源进行定位的特点,提出了一种在利用常用观测量方位角、俯仰角及时差信息的基础上,增加角度变化率信息的单站无源定位与跟踪方法。计算机仿真结果表明,该定位方法具有较好的定位精度和定位速度,具有很大的实用价值。

The passive location system based on opportunity transmitter is using a television or FM broadcast transmitter as the illuminator. Some advantages are obtained, such as anti-elint, electronic counter-countermeasure, detection of stealth targets and counter antiradiation missile. The system has better foreground. According to the characteristics ofopportunity transmitter, a passive location and tracking algorithm is proposed which is not only using azimuth, elevation angle and time difference of arrive （TDOA） measurements which are in common use, but also adding to the changing rates of angle. The computer simulation results indicate that this algorithm performs well in both the location precision and speed.