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介绍了利用对大气中水汽含量敏感的微波辐射计,在电波传播路径上实时测量大气辐射亮温直接进行折射误差修正的方法。该方法是在电波传播路径上直接获得折射修正信息样品的,不受大气时变特性和水平不均匀性的影响,因而可提高修正精度。在天顶方向湿项折射误差实时修正精度可达厘米级。
The method of using the microwave radiometer which is sensitive to the water vapor content in the atmosphere to directly measure the refractive error of atmospheric radiant temperature in the propagation path of radio waves is introduced. The method is to directly obtain refraction correction information samples on the radio wave propagation path without being affected by the atmospheric time-varying characteristics and horizontal nonuniformity, thereby improving the correction accuracy. In the zenith direction wet item refractive error real-time correction accuracy up to centimeter level.