论文部分内容阅读
CCD肪冲压缩器与数字式脉冲压缩器相比,具有体积小,功耗低,可靠性高,并可省去昂贵的高速、高精密的A/D、D/A变换器等优点。但一般使用在数微秒子码宽的量极上。现代雷达距离分辨要求窄脉冲、高时钟驱动下工作的CCD脉冲压缩器。本文简单扼要地介绍了用CCD分裂电极横向滤波器或CCD抽头延迟线作的13位巴格码脉冲压缩器,其码宽从0.4μS到1.6μS可变或0.7μS到2μS可变。当工作频率提高时,输出的主副瓣比逐渐下降,达不到理论值(22.3dB)。作者从理论上对影响主副瓣比下降的主要因素作了探讨,给出了试验结果,对进一步改进CCD脉冲压缩器性能提出自己的看法。
Compared with the digital pulse compressor, the compact CCD compressor has the advantages of small volume, low power consumption and high reliability, and can save the expensive high speed and high precision A / D and D / A converter. But generally used in a few microseconds wide amount of code on the pole. Modern radar distance resolution requires narrow pulse, high clock driven CCD pulse compressor. This article presents a brief introduction of a 13-bit bar code pulse compressor using a CCD splitter transverse filter or a CCD tap delay line. The code width is variable from 0.4μs to 1.6μs or from 0.7μs to 2μs. When the operating frequency increases, the output of the main side flap ratio decreased gradually, reaching the theoretical value (22.3dB). In this paper, the author mainly discusses the main factors which affect the ratio of main and sidelobe lobe declining, and gives the experimental results. It puts forward my own view on how to improve the performance of CCD pulse compressors.