A Radar Cross Section (RCS) outdoor range is a specialized facility used for research and development in the field of radar and antenna technology. It is an outdoor test facility designed to measure and characterize the RCS of objects under realistic conditions, including those encountered in actual operation.

The RCS outdoor range typically consists of a large, flat outdoor area, with a measurement system located at a distance from the object being tested. The measurement system usually includes a transmitting antenna and a receiving antenna, which are used to measure the strength of the signal reflected back from the object being tested