| With the advancement of social development and science and technology, radar either in the military field or in daily life have a broad application prospects, analysis from the perspective of the war, we are able to request to radar deal target echo signal promptly and effectively, in order to achieve large quantities of moving targets in real-time and effective search and tracking, meanwhile receiving the echo signal and processing in a way to extract the target parameters which we need to suppress the information clutter out, in order to guid artillery, missiles and other weapons to attack targets. Therefore, the radar system can achieve the desired performance in a complex electromagnetic environment has become urgent problem to resolve in a military and civilian electronic area. When the radar echo signal is received, except for the target signal,there is also a wide variety of clutter signals,like clouds and rain, waves and wire clutter interference,which are often accompanied by the presence of the target signal.When extracting relevant parameters, clutter suppression becomes the primary issue. In Clutter suppression, how to solve "blind speed" effectively to inhibit the clutter signal to improve the detection capability has become a core task,for this,we put forward a Stagger Time-Variant MTI filter and carried out the following tasks:First,the thesis introduces type of radar clutter and noise characteristics, and then show clutter suppression methods we used, and gives the "blind speed" problem model, and then offers several Stagger Time-Variant code optimization algorithm to achieve "blind speed", solution and focuses on genetic algorithm which is complete presentation varies code optimization solution to achieve varied MTI "blind speed" and clutter suppression in the algorithm, by varying conditions clutter filter design for single and multi-clutter situation clutter suppression and target detection. And through simulation algorithm, describes its performance analysis methods. Finally, with a radar signal processing hardware platform, The thesis gives method of stagger Time-Variant MTI i.e.Stagger Time-Variant in AMTI clutter suppression in single and multi-clutter for clutter. First, the radar signal processing hardware platform and algorithmic programs were introduced, and highlights the communication system controller software design and implementation of function, and finally designs the program and hardware debugginghardware platform to achieve a better suppression in the Stagger Time-Variant MTI T-AMTI clutter in single and multi-clutter suppression. |
