This paper proposes, and practically implements, a technique for finding equivalent frequencies, which are attributed to the atmospheric optical depths measured by a two-channel wideband radiometric system in the millimeter wavelength range. Establishment of the equivalent frequency (averaged over the frequency response of the system) in the corresponding atmospheric transparency window makes it possible to relate wideband measurements of the optical depth with narrowband radiometric measurements used in standard calculations of integral humidity. The search for equivalent frequencies is based on a comparison of experimental data on the effective transparency in the millimeter wavelength range and integral humidity of the atmosphere by simulation of a real atmosphere using the MPM Liebe model. The developed method of consistent determination of humidity and transparency of the atmosphere in the millimeter wavelength range can be used for both millimeter-wave radioastronomy and high-performance space telecommunications. In particular, the method specifies the spectral characteristics of the measured atmospheric transparency for the studied radio astronomy site and estimates the astroclimate conditions.

中文翻译：

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使用宽带辐射计在毫米波长范围内一致确定大气的积分湿度和有效光学深度

本文提出并实际实施了一种用于寻找等效频率的技术，该技术归因于由毫米波长范围内的双通道宽带辐射测量系统测量的大气光学深度。在相应的大气透明度窗口中建立等效频率（系统频率响应的平均值）可以将光学深度的宽带测量与积分湿度标准计算中使用的窄带辐射测量相关联。等效频率的搜索基于对毫米波长范围内的有效透明度和大气整体湿度的实验数据的比较，通过使用 MPM Liebe 模型模拟真实大气。已开发的在毫米波长范围内一致确定大气湿度和透明度的方法可用于毫米波射电天文学和高性能空间电信。特别是，该方法指定了所研究射电天文站点测量的大气透明度的光谱特征，并估计了天体气候条件。