IQ时序故障对数字脉冲压缩的影响  

Influence of IQ Time-sequence Problems on Digital Pulse Compression

作　　者：闫冯军[1] 朱德智[1] 

机构地区：[1]中国电子科技集团公司第38研究所数字技术部,安徽合肥230031

出　　处：《电子科技》2010年第4期55-57,共3页Electronic Science and Technology

摘　　要：雷达系统中,数字脉冲压缩可以获得较高的距离分辨率。传统的数字脉冲压缩采用正交双通道处理,即复信号的I路和Q路分别送往硬件处理器,进行合成脉压。由于IQ颠倒和错位等时序问题,给脉压带来多种消极影响,对调试和研究造成一定的误导。文中分别以测试信号和实际采集数据对上述情况进行仿真,仿真结果证明多种时序错误对应的脉压波形,对工程设计和调试有一定的借鉴意义。In the radar system, digital pulse compression can obtain high range resolution. Traditional digital pulse compression adopts crossed two-channel processing, namely I-channel and Q-channel of complex signals are sent to the hardware processor respectively and process pulse compression. IQ＇s reversal and offset have much nega- tive influence on pulse compression and mislead the debug and research. This paper simulates the instances mentioned above by test signal and sampling data, and the results prove to be of value in engineering design and debug.

关 键 词：线性调频 脉冲压缩 正交双通道 

分 类 号：TN947.51[电子电信—信号与信息处理]