Data Processing Of The Radar Based On Opportunity Transmitters

The passive radar based on opportunity transmitters is a new system radar. Not radiating electromagnetic wave and using other outer electromagnetic wave to detecting object, this radar named as Silent Sentry is not easy to be detected by electronic scouting system, and it has abilities of ECCM (Electronic Counter-Countermeasure), AARM(Anti Anti-Radiation Missile) and anti-stealthy targets. In this system radar, the very strong direct arrival wave and multi-path signal of the receiver device, as its character, will affect the detection of object very badly, and this character will reduce the detection probability of object and increase the probability of false alarm. We must do anything to avoid the affection of these signals including better signal processing. Of course, we also can decrease the probability of false alarm and increase the radar detect performance, so the dada processing of the radar is very important.The thesis studied the data processing part of passive radar system. The data processed by signal processing part of the radar, was tidied and associate reasonably and effectively and the complete track of the moving object was drawn. Firstly, we gave the data processing flow chart of the radar, Secondly, we analyzed and discussed the major parts of data processing in detail, the parts included the forming and refreshing of the clutter data, the starting, of the track, the association between the point and the track, the filter of the track, the patch and disappearance of the track and so on. Finally, drew the real-time track chart of the plane in two systems, having angle information and having no angle information.The practical radar system is working steadily and effectively and it proved that the method researched in this thesis is logical and effective.