文档介绍：/㈣摘要针对同一阵形,本论文研究了多种单脉冲和差测角算法:基于对称取反的和差测角方法、基于直接加权法的和差测角方法、基于双指向法的和差测角方法, 并通过仿真实验对不同测角算法进行了性能分析。结合某型二次气象雷达数字中频测角分机项目,将测角算法在数字信号处理器中实现,完成对多个目标的跟踪。本论文首先介绍了数字波束形成相关概念, 包括阵列信号模型、数字波束形成、和差波束形成。其次介绍了线阵情况下,上述三种和差测角方法以及基于线阵的全维仿真,然后,针对面阵,对三种和差测角方法进行了深入的分析推导,同时介绍了上述三种方法的和差多波束形成算法, 并通过仿真对性能进行了分析,直接加权法与其他两种方法相比,测角范围广、测角精度高。最后,结合项目介绍了基于直接加权法的和差多波束测角硬件实现, 先简单介绍了雷达信号处理分机的总体架构及流程;其次详细介绍了直接加权法的硬件实现;最后通过半实物的仿真数据对三种方法进行验证,直接加权法的测角精度优于其余两种方法。关键词:对称取反双指向泰勒/贝叶斯窗和差多波束形成数字信号处理芯片 ABSTRTACT ABSTRACT Three kinds of single pulse sum-difference angle meaSuremems methods, including Symmetric invertmethod,direct weighting method anddouble—point method, are analysised inthis dissertation. For some typeradar,The performances ofthe threemethods pared,and thentheoptimal angle measuremem method isapplied totheengineering on DSP,sum·difference angle measurements methods are used torealizesum—difference muti-beamforming,which Can be used formuti-target ,digital beamforming isintroduced,including array signal model,digital beamforming,and sum·,for thelineararray thetheoryanalysis andthe simulation ofthe sum—difference methods aregiven indetail;also for theplanar array, simulation resultsandperformance analysis show that thedirectweighting method has someadvantages,such aswideangle measuring range andhigh pared with other two ,used for the engineering project,the hardware implementation ofdirectweighting sum-difference multi-beamforming isintroduced, including the whole hardware structure and the hardware implementation ofdirect weighting sum-difference muti-beamforming;Finally the hardware in—the-loop simulation results show that theangle measurement accuracy ofdirectweighting method iSbetterthanothertwo methods. Keywords:Symmetric invert double-point Taylor/Bayliss sum-difference muti-beamforming Digtal signalprocessor 第一章绪论第一章绪论 ,单脉冲跟踪技术随着军事技术的发展得到了迅速发展。在最早的跟踪雷达中主要采用圆锥扫描、波束转换【1】,但不论是圆锥扫描还是波束转换都需要对不同的雷达回波脉冲进行比较