基于射频数字化接收机的无校正测向技术

Direction Finding Technique Without Phase Calibration Based on RF Digitization Receiver

在模拟变频体制下,每次测向前必须进行一次系统内部相位误差校正,这严重影响测向的效率。针对射频数字化接收机的特点,给出一种简便高效的测向方法——无校正测向。它将校正参数预置在测向算法内,从而去除了测向时校正这一流程,提高了测向效率。该方法在实际射频数字化接收机上进行了测试和验证。

In analog tuner system, the phase calibration must be carried out each time before direction finding(DF), seriously affecting the system DF efficiency. In this paper, a more efficient and simplified direction finding method without phase calibration is presented based on the characteristics of RF digitization system. The calibration parameters are preset in the DF program. By this way, the calibration process is skipped which improves the DFefficiency. The test and verification are also carried out in an actual RF digitization receiver and the result is presented in this paper.