本文介绍了应用锁相技术对光栅信号进行高倍率插补的原理、方法、实施的技术途径及实验结果。该项技术已应用在实际的测角系统中并获得满意的结果。实验结果:T=500(T—细分份数);分辨率0.02″(角秒)时电路细分最大误差θ_(Σmax)<±0.01″。显然该项技术可用于任意插补值的光栅信号细分处理中。 This paper introduces the principle, method, technical approach and experimental results of the high-rate interpolation of grating signal using phase-locked technology. The technology has been applied to the actual goniometry system and get satisfactory results. Experimental results: T = 500 (T-fraction); maximum error of circuit subdivision θ_ (Σmax) <± 0.01 “at a resolution of 0.02” (angular seconds). Obviously, this technique can be used for subdivision of raster signals with arbitrary interpolation values.