大气折射误差的高精度修正

High Precision Modification to Atmospheric Refractive Errors

现代无线电测量定位系统中，由于大气折射误差已是设备本身误差的２～３倍，因此对大气折射误差进行精确修正，对提高定位精度十分重要。介绍了用微波辐射计在电波传播路径上直接测量大气辐射亮度温度的方法，并进行了折射误差修正，该方法不仅可提高修正精度，而且还可以进行实时修正。

The real measurement indicates that the atmospheric refractive errors are about 2～3 timesof the device errors. The high precision modification to the atmospheric refractive errors must be made in theaccurately tracking measurement of outer trajectory. In tabs poper,a new methed of measuring directly theatmospheric radiation brightness temperature in the radiowave propegntion pethe by microwave radiometer ispresented. The new method can not only improve the modification accuracy, but also realize real-timemodification.