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。
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.
出处
《空间电子技术》
2009年第4期8-11,共4页
Space Electronic Technology
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
Direct sequence PN code acquisition Matched filter Doppler frequency Polyphase filterPartial match
