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针对传统塔康机载设备方位测量方法测量误差大、抗干扰能力弱的问题,根据塔康标准信号的特征提出了基于正弦曲线拟合法的方位精确测量方法,计算了传统方法与正弦曲线拟合法的测量误差,定义了被测信号的品质因数,通过它可确定测量值的可信度。通过仿真,比较了不同信噪比情况下传统测量方法和精确测量方法的性能,研究了当被测信号发生畸变时,品质因数的变化情况。仿真结果表明精确测量方法明显提高了塔康系统的方位测量精度和抗干扰能力,品质因素较好地反映了信号的畸变情况。
Aiming at the problem of large measurement error and weak anti-jamming ability of traditional Tacan airborne equipment azimuth measurement method, an azimuth precise measurement method based on sinusoidal curve fitting method is proposed according to the characteristics of Taconic standard signal. The traditional method and sinusoidal curve fitting method The measurement error, defines the quality factor of the signal under test, through which the confidence of the measured value can be determined. Through the simulation, the performance of the traditional measurement methods and the accurate measurement methods under different signal-to-noise ratios are compared. The variation of the quality factor when the measured signal is distorted is studied. The simulation results show that the accurate measurement method obviously improves the azimuth measurement accuracy and anti-interference ability of the Tacon system, and the quality factor better reflects the signal distortion.