Timing Control And Signal Processing Program Design In Multi - Mode Phased Array Radar System

Combined with phased array antenna and radar detection, the phased array radar system breaks the limits of the conventional radar systems with limited scanning mode and fixed transmitted waveform. The phased array radar has a variable beam shape, and optional transmitted waveform, thereby the phased array radar system can work in a variety of modes, and undertake tasks under different conditions. Meanwhile, the digital processing of multi-mode phased array radar system becomes more and more complex, especially in the flexible timing control, variety of high speed data transmission, and variety of signal processing algorithms.Under the background of a phased array radar system developed in the laboratory, in order to detect high speed target with a range from about ten kilometers to several meters, a multi-mode phased array radar system is designed. And the timing control and signal processing function are implemented on the FPGA of the radar signal processor hardware.In this thesis, firstly, under the detection requirement of the radar system, three modes of transmitted waveform for the radar are designed, the handoff condition of three-mode waveforms is considered. Secondly, the communication protocols of subsystems in the phased array radar are designed. Thirdly, the software of radar timing control and signal processing function are developed on the FPGA of radar signal processor, including the timing-control module, high speed data transmission module and signal processing module.At last, each module of the software developed on the FPGA of radar signal processor is verified by using the dedicated radar echo signal simulator developed in the laboratory. Through the outfield test in the real clutter environment, the radar signal processor can effectively handoff the transmitted waveform, and can search, confirm and track the target stablely.