| 扩频数字接收机中的多相匹配滤波 |
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| 作者姓名： | 吕晶晶 陈豪 |
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| 作者单位： | 西安空间无线电技术研究所,西安710000 |
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| 摘 要： | 文章提出一种改进形式的伪随机码匹配滤波器，这种改进形式将整数倍抽取、内插等重采样处理（重采样处理满足Nyquist采样定理）与伪随机码匹配滤波器相结合，用多相形式实现伪随机码的匹配运算。这种方法在改进原匹配滤波器并行处理结构的同时降低了对存储数据用的总的存储量要求和运算速率。
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| 关 键 词： | 匹配滤波器 多相滤波 扩频数字接收机 伪随机码 PN码捕获 |
Polyphase-Partial Matched Filtering in DSSS System |
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| Authors: | Lv Jingjing Chen Hao |
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| Institution: | Lv Jingjing Chen Hao (Xi'an Institute of Space Radio Technology,Xi'an 710000,China) |
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| Abstract: | This paper is detailed in the key technique of the fast acquisition of the PN code in DS spread spectrum system.To achieve catching the right code phase in a short constant,a new catching algorithm named polyphase-partial matched filter is put forward.This algorithm can be used in a high dynamic state with SNR in a low level. |
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| Keywords: | Direct sequence PN code acquisition Matched filter Doppler frequency Polyphase filter Partial match |
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