HF ground wave bi-station radar tracking and filtering without azimuthal measurements

作者：Fu Tian Jiao^*; Zhou Gong Jian; Tian Wen Long; Quan Tai Fan

来源：Systems Engineering and Electronics, 2011, 33(3): 552-556.

DOI：10.3969/j.issn.1001-506X.2011.03.17

• Actual environments
• Doppler measurement
• Ground waves
• High frequency
• High frequency ground wave radar
• Key issues
• Low signal-to-noise ratio
• Nonlinear tracking
• Positioning and tracking
• Range-finding location
• Tracking system

The azimuth accuracy of the high frequency ground wave radar is poor in an actual environment. This problem is worse when tracking the long-range targets with low signal to noise ratio, which can cause the plots highly decentralized and damage the formation of the over-the-horizon tracks. A high frequency ground wave bi-station system is proposed to triangulate target tracks using only range and Doppler measurements. Two key issues are discussed here, focusing on the issue of positioning and tracking filter algorithm. The locating model of this system is established and the nonlinear tracking problem is solved by extended Kalman filter (EKF). The simulation shows that EKF can handle it well, and the accuracy of this system can meet or slightly better than the conventional single station tracking system with coarse azimuth measurements.

• 出版日期2011