A method is presented for determining the angle of arrival of the direct and reflected wave for line of sight cases. The method assumes one direct and one reflected wave. The phase difference equipment, as developed by the Electrical Engineering Research Laboratory, measures the difference in phase at 3.2‐cm wave‐length between two points separated vertically by ten feet [F. E. Brooks, Jr. and C. W. Tolbert, Equipment for Measuring Angle‐of‐Arrival by the Phase Difference Method, Electrical Engineering Research Laboratory, Report No. 2, May 1946] and the signal strength at each point. The normal procedure involves the raising of either transmitter or receiver while the other is held at a fixed level. The data to which the method is applied were collected at the Navy Electronics Laboratory desert site near Gila Bend, Arizona, during April 1947. The results are compared to calculations based on the meteorologically measured distribution of the refractive index and ray theory.
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机译：提出了一种用于确定视线情况下直达波和反射波到达角的方法。该方法假设一个直接波和一个反射波。由电气工程研究实验室开发的相位差设备可测量垂直相隔十英尺[F.]的两点在3.2厘米波长处的相位差。 E. Brooks，Jr.和C. W. Tolbert，用相差法测量到达角的设备，电气工程研究实验室，1946年5月，第2号报告]，以及每个点的信号强度。正常程序包括将发射器或接收器抬高，而另一个保持固定水平。 1947年4月，在亚利桑那州吉拉本德附近的海军电子实验室沙漠现场收集了应用该方法的数据。将结果与基于气象学测得的折射率分布和射线理论的计算结果进行了比较。
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