Low-cost method for estimating antenna attitude of Satcom on the move measurement and control system

Abstract

The present invention discloses a low-cost method for estimating antenna attitude of satellite communication on the move measurement and control system. The method comprises the steps of: 1) sending a control command from a master controller to a servo driver, and according to the control command, controlling a motor to align the beam pointing of the antenna in the mobile-satellite communication system on the move by the servo driver; 2) acquiring an attitude angle differential equation of a carrier; 3) acquiring an pitch angle theta m and roll angle phi m of the carrier; 4) acquiring a pseudo course angle Psi v; and 5) conducting attitude resolution by using improved unscented Kalman filtering according to the attitude angle differential equation of the carrier, theta m, phi m, and Psi v obtained in the previous steps, so as to obtain a three dimensional attitude angle of the carrier, and then controlling the three motors to adjust the antenna beam pointing according to the three dimensional attitude angle of the carrier. The invention can accurately align the carrier to an object satellite and has low cost.

Description

technical field [0001] The invention belongs to the technical field of satellite communication system antenna attitude estimation and relates to a method for estimating the antenna attitude of a low-cost communication in motion measurement and control system. Background technique [0002] With the development of economic globalization and informatization, people urgently need to be able to transmit or receive broadband, large-capacity voice, data, images, videos, etc. Multimedia information in order to grasp the rapidly changing situation faster and more accurately. Satellite communication is the only communication system that can provide different business requirements in different environments at the same time. However, due to the low bandwidth allocated by ITU to satellite mobile services, it is difficult to meet the needs of broadband communication services. The "communication in motion" communication system based on the fixed satellite service provides the possibility...

AI Technical Summary

Problems solved by technology

However, due to the large drift of the low-cost gyroscope, the large measurement noise of the speedometer and the susceptibility of the magnetoresistive sensor to electromagnetic interference, the performance and use conditions of the measurement and control system are limited, so that the carrier cannot be accurately aligned with the target satellite.

Images