The radiowave test facility is used for analyzing the radiowave properties of antennas and radiowave sensors to be on board launch vehicles and spacecraft. The radiowave properties analysis is performed by transmitting radiowaves from various directions to an antenna or a radiowave sensor mounted on a rotary table and measuring their reception sensitivity.
The 2nd Radiowave Test Facility (2nd anechoic chamber) is a semi-closed-type radiowave test room one side of which can be wide-open to the outside. With the shutter opened, one can see a measurement path extending further, which can be a constituent of a far-field measurement system with a distance of up to 450 m between transmitting and receiving equipment with the aid of an outdoor mobile collimation tower. The 2nd anechoic chamber is on the 4th floor of the building comprising it, and the mobile collimation tower can be vertically stretched for 26 m to align its height to that of the chamber, thereby allowing tests to be performed with no impact of the reflection from the ground surface.
