Design and construction of a measurement site for radar unwanted emissions

Since there is only one commercially available measurement site in the world capable of measuring unwanted emissions in the spurious domain and the out-of-band domain of a marine radar, more measurement sites are necessary. We are going to design and construct a measurement site in Japan. In this paper, we introduce the measurement site and propose how to control multipath propagation. There are three techniques to control multipath waves: narrow antenna beam width, diffuse reflection on the grassy ground, and the use of a reflected wave barrier. A method for estimating the reflection point is also proposed.