Rocket telemetry antenna emission pattern modeling method based on local sampling

The invention discloses a rocket telemetry antenna emission pattern modeling method based on local sampling, and belongs to the field of rocket telemetry antenna pattern modeling. Firstly, direction spherical coordinates (alpha, beta) under a spherical coordinate system are established based on a rocket body coordinate system, gain point spherical coordinates under the spherical coordinate system are established by using the direction spherical coordinates (alpha, beta), and an antenna transmitting directional diagram is formed by a gain point set. Then, according to a rocket telemetry outline provided by a product department, directional diagram descriptions of different types of rockets are obtained, gain sampling points in a plurality of directions are obtained from the directional diagram descriptions, a directional diagram database is established, and emission gains in all the directions are calculated through an inverse distance weighted interpolation method; and finally, performing simulation modeling