Oth Radar Data Processing Technology

OTHR (Over-The-Horizon Radar) is a kind of HF(high frequency) radar with great expectation, which has arisen great concern worldwide because of its large coverage, anti-stealth character and so on. In the paper, data association in OTHR is discussed. And the main work lies as follows:1. It is introduced that what the main application background of OTHR and its data processing system is and how they have developed recently. Firstly, the history and main characteristic of OTHR is presented. Secondly, some current problems in the data processing of OTHR are pointed out. And thirdly, the developments of current OTHR data processing are summed up.2. In the simulation environment which is deliberately designed for the OTHR's multipath propagation phenomenon, strict and detailed reasoning and demonstrations of the coordinate registration are given. And then a simulation justifies the correctness of the registration.3. The detailed parts of the MPDA tracker are described in detail. And the demonstrations of main formulas are also given. In particular, how to incorporate the close multipath detections and multiple propagation modes is proposed. Meanwhile, some errors in the reference are corrected. Finally, a simulation of tracking a target with the MPDA tracker in the environment designed in 2 is presented, and at the same time that of the standard PDA tracker is also given.4. Some possible schemes in OTHR target tracking are given in the last part of the paper.