| 数字相关法测时差的工程实现 |
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| 引用本文： | 张岭旭,朱志军.数字相关法测时差的工程实现[J].航天电子对抗,2006,22(6):39-43. |
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| 作者姓名： | 张岭旭 朱志军 |
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| 作者单位： | 1. 中国航天科工集团公司8511研究所,江苏南京,210007
2. 空军驻772厂军事代表室,江苏南京,210009 |
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| 摘 要： | 时差测量精度是定位技术的关键指标。传统模拟法的时差测量精度随输入信号的沿宽加大而变坏(相同信噪比),当信号沿宽达到1500ns时,其时差测量精度已不能满足定位系统的要求。而数字相关法能适应不同沿宽的雷达信号时差的高精度测量。介绍了利用A/D、DSP和FPGA等器件搭建的硬件系统来实现数字相关法时差测量的方法。重点讨论了A/D采样模式、数字滤波、相关算法简化、插值技术及最终数据的统计处理。该方法具有一定的普遍适用性。
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| 关 键 词： | 时差测量 数字相关 数字滤波 抛物线插值 |
| 修稿时间： | 2006年6月3日 |
Engineering realization of measuring time-delay by digital correlation |
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| Zhang Lingxu,Zhu Zhijun.Engineering realization of measuring time-delay by digital correlation[J].Aerospace Electronic Warfare,2006,22(6):39-43. |
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| Authors: | Zhang Lingxu Zhu Zhijun |
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| Abstract: | Precision of measuring time-delay is key index of orientation technology.Precision of measuring time-delay by analog facility is worse as so as edge width of input signal is bigger.But measuring time-delay by digital correlation can adapt all radar signal of difference edge width.Digital facility consists of A/D,FPGA,DSP,etc.Importance discussion is sampling mode of A/D,digital filtering,predigestion of correlation arithmetic,insert technic,statistic disposal. |
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| Keywords: | time-delay measure digital correlation digital filtering parabola insert |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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