基于微波光子技术对到达时差和抵达角的估计

Estimations of TDOA and AOA Based on Microwave Photonic Technology

针对传统方法测量雷达时域参数方法较不够灵活的问题,提出了一种基于光功率测量估计微波参数的方法。该测量方法主要基于两个马-曾干涉仪,原理是通过测量输出端的光功率反推得到两个微波信号之间的相位差,进而计算到达时差(TDOA)和抵达角(AOA)。通过对模型仿真,发现该方法可有效测量微波时域参数,且具有较高的精度。

A new method based on optical power measurement is proposed for estimating the microwave＇s param- eters with flexibility. The method adopts two Mach-Zehnder Modulators to obtain the optical powers of two microwaves at the output terminal, thus the phase difference between them. Then we can obtain TDOA and AOA by calculation. Simulation of the model shows the method is effective and of high accuracy.