基于波长控制的雷达射频脉冲稳时光纤传输方案

Optical fiber transmission of radar RF pulse with stable time delay based on wavelength control

针对时差定位的无源雷达系统站间传输时延不稳定问题,提出了一种基于波长控制的雷达射频脉冲稳时光纤传输方案.首先理论分析了光纤链路的传输时延和激光器波长之间的关系,然后提出了通过改变激光器波长稳定传输时延的方法,最后对所提方案进行了仿真.仿真结果表明,该方案能使传输时延波动的峰-峰值小于374ps.满足了时差定位的无源雷达系统对传输时延稳定性的要求.

In view of the problem of transmission time delay being unstable between the passive radar system stations with the time difference of arrival（TDOA） location, this paper proposes an optical fiber transmission scheme of radar RF pulse with stable time delay based on the wavelength control. The relations between the transmission time delay of optical links and the wavelength of the lasers are analyzed theoretically, firstly, the method of stabilizing the time delay by changing the lasers＇ wavelength proposed next, and finally, the simulations to this proposed scheme performed. Simulation results show that this proposed scheme can make the peak-to-peak value of time delay fluctuations lower than 374 ps, which meets the stability requirement for transmission time delay in TDOA passive radar system.