Design And Implement Of Sorting And Tracing Device For Various Waveform Radar Signals

The sorting and tracking device of radar signals is one of the key components of radar detector, it requires rapid data processing rate, high real time capability and little volume. With the rapid development of radar technique, radar signal becomes more and more complicated, so the real-time processing ability of traditional sorting and tracking system is faced with great challenge.In this dissertation, firstly the sorting problems under high pulse density condition is researched, the complicated environment of radar signal sorting and tracking is analyzed, and several commonly used methods are analyzed and compared. At last a new method is proposed, it removes the conventional radar signals using SDIF algorithm, then sorts the radar signals with agile PRI using parameter matching algorithm.To deal with the disadvantage of the conventional signal sorting algorithm, a novel signal sorting method-ICA (Independent Component Analysis) is proposed, the principle and process of the algorithm is analyzed. The simulation is presented under different conditions based on MATLAB. And the application prospect of the algorithm is showed.The design principle of the PRI sorting circuit is researched. Considering the conventional wide-gate can't be given when the radar signal is agile, a new design principle of sorting device is proposed that the wide-gate is given by the combination of the "more wide-gates" and the '' less wide-gates". According to the different PRI regularity of different radar signal, the wide-gate is given by different ways. Furthermore the function and implement principle of the models in the tracking device is stated.Finally the new sorting and tracking algorithm is accomplished on hardware platform based on DSP and FPGA. The design of the circuit structure and correlative program is introduced in detail. At last, the validity of the new algorithm has been verified successfully.It has been proved that this new sorting and tracking device has better identification ability for various waveform radar signals.