分布式孔径相参合成雷达技术试验验证与分析

实现收发全相参合成对运动目标稳定跟踪是分布式孔径相参合成雷达技术进步的重要标志，首先介绍分布式孔径相参合成雷达的基本理论，再从接收相参和收发相参2个阶段对飞机目标跟踪试验进行分析，分别给出了相参合成信噪比增益改善、相位差值变化和目标跟踪航迹等试验结果。试验结果表明目标跟踪稳定，信噪比增益改善接近理论值。在此基础上，给出2部X波段大型实装相控阵雷达卫星目标相参合成跟踪试验结果，实现收发全相参合成对卫星目标稳定跟踪。通过试验验证分布式孔径相参合成雷达具有技术可行性和工程可实现性。

Test and analysis of distributed aperture coherence-synthetic radar technology

Realizing the stable tracking of moving targets by the transmit-receive-coherence mode is an important symbol of the technological progress of distributed aperture coherence-synthetic radar. Firstly, the basic theory of the distributed aperture coherence-synthetic radar is briefly introduced, then, the aircraft target tracking test is analyzed from two stages of receive-coherence and transmit- receive-coherence. The test results of coherent-synthetic Signal-to-Noise Ratio(SNR) gain improvement, phase difference changes and target tracking track are given respectively. Test results show that the target tracking is stable and the SNR gain improvement is close to the theoretical value. On this basis, the test results of satellite target coherence-synthetic of two X-band large-scale phased array radars are given to realize the stable tracking of high-speed moving satellite targets in transmit-receive-coherence mode. Technical feasibility and engineering achievability of distributed aperture coherence-synthetic radar are fully verified by the test.