摘要
针对多普勒频移带来脉压失配问题,为克服现有算法运算量大且占用大量存储空间的弊端,文中提出一种快速消除多普勒频移对数字脉压(DPC)影响的算法。该算法基于傅里叶变换性质,利用单向循环链表技术,对无多普勒频率时的匹配滤波系数表重新选址。仿真结果表明,新算法在大多普勒频移时信噪比损失小,且不会增加运算量和存储空间,具有很高的应用价值。
For the problem of mismatch of pulse compression due to Doppler frequency, a novel fast algorithm of eliminating the effect on Doppler frequency shift on DPC is proposed in this paper. In the algorithm, matched filter coefficients are adaptively gen- erated by addressing in the circulatory linked list consisting of Doppler-free frequency coefficients. Simulation indicates that the SNR-losing with high Doppler frequency can be decreased by this algorithm without additional computing costs and memory space. So this algorithm has a high application value.
出处
《现代雷达》
CSCD
北大核心
2011年第9期53-57,61,共6页
Modern Radar
关键词
线性调频
数字脉冲压缩
多普勒频移
循环链表
linear frequency modulation （LFM）
digital pulse compression （DPC）
Doppler frequency shift
circulatory linked list
