Design And Realization Of Adaptive Single Pulse Angle Measurement Circuit For Subarray Array Digital Array Radar

Digital array monopulse techinique is widely used in detection, guidance, electronic countermeasures areas because of its precise and rapid angle detecting and its adaptive anti-jamming ability. In large-scale digital array antenna, sub-array structure is adopted to form sum and difference beam for angle estimation, which can not only guarantee the adaptive interference suppression, but also reduce the system cost and the complexity of the adaptive beamforming algorithm effectively.In this paper, adaptive monopulse angle measuring circuit is developed for the actual demand of one subarray digital radar, which bases on TI high-performance 8-core parallel processor TMS320C6678 and Xilinx latest Kintex-7 series FPGA. Afterwards research and implementation on subarray-adaptive monopulse algorithm as well as system function and performance test are carried out on the platform. Major work of this paper is shown below:1. Subarray adaptive monopulse algorithm is researched and the implementation scheme of the monopulse angle measuring circuit is proposed, which are aiming at the development of subarray digital radar;2. The design and debugging of the adaptive monopulse circuit with 8-core DSP TMS320C6678 centered are accomplished, including the DSP circuit, the FPGA circuit, high speed interface circuit like SRIO, DDR3 and gigabit ethernet, the complex power and clock supply circuit and so on;3. Subarray adaptive monopulse algorithm is implemented and optimized on the C6678 based monopulse circuit.The result of system test shows that the performance of the adaptive monopulse circuit we design and implement is good and meets the requirements of the system indicators.