变容二极管调频的非线性及其校正

Nonlinearity of Varactor Frequency Modulation and Correction

该文分析了调频测距系统中变容二极管调频振荡器调制的非线性及其对测距精度的影响。提出了一种具体的校正方法,并详尽地介绍了校正的原理、电路及机辅设计程序。经非线性校正明显地提高了测距精度。

This paper has analysed the nonlinearity of the varactorFM oscilator in the FM ranging system and its influence on rangingprecision. A specific correction method is put forward. Besides, theprinciple, the circuit and the CAD program of correction are describedin detail. Through nonlinear correction we has notably raised theranging precision.