论文部分内容阅读
针对多种接收相参处理法对改善因子的限制 ,提出了一种全新的幅相联合处理算法。介绍了该算法的数学分析 ,计算仿真 ,数字信号处理器 (DSP)实时实现方法。该算法分别通过卷积和相关提取不受发射脉冲随机初相、振幅、脉间频率抖动影响的幅度分量和相位分量 ,再联合成新的相参复信号。这个联合信号具有幅度、相位时间一致性好 ,便于用DSP实时实现的优点。理论分析和实际测试表明 :该算法的改善因子性能大于 5 5 d B。该算法的应用使某非相参雷达的杂波中可见度性能提高 10 d B
Aiming at the limitations of many kinds of receiving coherent processing methods to the improvement factor, a new algorithm of amplitude and phase joint processing is proposed. The algorithm of mathematical analysis, calculation simulation and digital signal processor (DSP) real - time implementation are introduced. The algorithm combines the amplitude components and the phase components which are not affected by random initial phase, amplitude and inter-pulse frequency jitter respectively by convolution and correlation extraction, and then combines them into a new complex coherent signal. This combined signal has the advantages of good amplitude and phase time consistency and easy real-time implementation with DSP. Theoretical analysis and practical tests show that the improvement factor of this algorithm is more than 55 days. The application of this algorithm improves the visibility of clutter in a noncoherent radar by 10 d B