摘要
针对单站无源定位系统中侦收通道内直达波干扰信号的影响问题,设计了一种自适应对消电路方案。通过对对消电路的数学模型进行分析结合仿真验证,提出一种相位、幅度分步骤调节的实现方案。该方案控制逻辑简单、电路易于实现,并进行了电路实际测试。测试结果表明,电路可实现31 d B的对消比。
In order to suppress the direct path interference of surveillance channel on passive radar,an automatic self-adaptive cancellation solution circuit is brought forward. Base on the mathematical models and result of simulation,phase and amplitude should adjust in steps. The control logic is simple and the circuit is easy to realize. Measurement results show that the actual circuit can achieve 31 d B cancellation ratio.
出处
《电子设计工程》
2017年第23期151-154,共4页
Electronic Design Engineering
关键词
无源定位
射频对消
自适应
对消比
passive locating
RF cancellation
self-adaptive
cancellation ratio
