摘要
根据二维相位和差单脉冲雷达系统实现结构,分析和仿真了天线-和差器、和差器、通道处理3部分电路的不理想对测角性能的影响.结果表明,天线-和差器的幅度不一致影响测角大小,相位不一致影响测角大小和测角极性;和差器阻抗不匹配影响测角大小和极性;通道处理电路幅度不一致影响测角大小,相位不一致影响测角极性.在不理想因素中,天线-和差器相位不一致对测角性能的影响最小,天线-和差器幅度不一致以及和差器阻抗不匹配的影响较大.
According to the structure of sum-difference patterns phase-comparison two-dimension mono-pulse radar system, the system is divided into three parts, including the antennacomparator, comparator, and channel processing circuitry. The impact of their non-ideal to the performance of angle measurement is analyzed and simulated. Some meaningful conclusions are acquired. The amplitude imbalance of antenna-comparator has influence on measured angle value but sign, and the phase imbalance has influence on both the measured angle value and sign. The impedance inconsistency of comparators affects both measured angle value and sign. The amplitude imbalance of channel processing circuitry affects the measured angle value and the phase imbalance affects measured angle sign. Furthermore, in the non-ideal factors, the impact of phase imbalance of antenna-comparator is the least, and the amplitude imbalance of antennacomparator as well as the impedance inconsistency of comparators is great.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2009年第8期726-731,共6页
Transactions of Beijing Institute of Technology
关键词
单脉冲雷达
相位和差
三通道不一致
魔T
mono-pulse radar
sum and difference patterns phase comparison
3-channel non- consistency
magic tee
