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已设计、制造和测试了一种试验型微波定向设备(电子经纬仪)。该设备和伴随的射频源包括轻便的蓄电池供电的方位测量系统。此系统用于观测、绘制、大地测量以及对对流层传播和骚动进行基本研究。角测量探测设备包括一部带有光学经纬仪的K_a波段干涉仪,以提供两种定向方式。方位角能直接地读到0.1弧度一秒。对干涉仪的初步测试表明,当对流层骚动最小时,定向重复性大约两弧度～秒(3σ),它与一级光学标准相比,其平均绝对误差小于10弧秒(3σ)。本文介绍了这种高精密仪器的设计、制造和测试。
A pilot microwave orientation device (electronic theodolite) has been designed, manufactured and tested. The device and accompanying RF sources include a portable battery-powered position measurement system. This system is used for observation, mapping, geodesy and basic research on the tropospheric transmission and disturbance. Angle measurement and detection equipment includes a K_a band optical interferometer with optical theodolite to provide two kinds of orientation. Azimuth can be read directly to 0.1 radians a second. Initial tests on the interferometer show that the directional repeatability is about two radians to one second (3σ) when the disturbance of the troposphere is minimal, and its average absolute error is less than 10 arc seconds (3σ) when compared with the primary optical standard. This article describes the design, manufacture, and testing of such high-precision instruments.