Studies of zenith pass tracing of the inter-satellite linkage antenna based on mechanical tilting

摘要

When the elevation of the user satellite antenna approaches 90° , the azimuth velocity demand becomes very large and because of the velocity-limited servo mechanisms of the real antenna, the antenna will be incapable of tracing TDRS. Then the blindness zone will be formed around the elevation of 90° . When the elevation is equal to 90° , the azimuth velocity becomes infinite. This moment is called the zenith pass moment.