单脉冲跟踪接收机系统误差数字补偿技术

Technology of System Error Digital Compensation for Monopulse Tracking Receiver

单脉冲跟踪接收机系统误差的存在会影响到单通道误差信号的调制度,进而引起方位、俯仰的交叉耦合,降低跟踪的精度和跟踪系统的灵敏度。在对跟踪系统和、差支路相差线缆补偿的基础上,通过分析跟踪系统误差产生的机理,提出了对系统误差的数字补偿技术,降低了方位、俯仰的交叉耦合,提升了跟踪系统的技术指标,并能够同时实现跟踪系统和、差支路的数字校相。

System error of monopulse tracking receiver can affect the modulation index of single channel error signal,bring cross coupling of azimuth and elevation,and reduce the precision of tracking and the sensitivity of tracking receiver.By using the cable to compensate phase difference of sum and difference channels and analyzing the generation principle of tracking system error,the digital compensation technology is presented.The technology can not only decrease cross coupling of azimuth and elevation,but also increase the technical specification of tracking system.The technology can also implement digital phase calibration of sum and difference channels.