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

A technology of measurement and control system and attitude estimation, which is applied in radio wave measurement system, satellite radio beacon positioning system, navigation through speed/acceleration measurement, etc. It can solve the problem that magnetoresistive sensors are susceptible to electromagnetic interference and limit the performance of measurement and control systems And use conditions, speedometer measurement noise and other problems, to achieve the effect of simple and easy to estimate the speed, reduce the amount of calculation of the system, and high precision

Inactive Publication Date: 2015-11-04
PLA SECOND ARTILLERY ENGINEERING UNIVERSITY
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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.

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

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Embodiment Construction

[0024] The present invention is described in further detail below in conjunction with accompanying drawing:

[0025] refer to figure 1 , the method for estimating the antenna attitude of the low-cost communication-in-motion measurement and control system of the present invention comprises the following steps:

[0026] 1) The main controller sends a control instruction to the servo driver, and the servo driver controls the motor according to the control instruction to make the beam pointing of the antenna in the mobile satellite communication system in motion point to the target satellite;

[0027] 2) The attitude measurement sensor is placed on the carrier. When the driving state of the carrier changes, the attitude of the carrier measured by the micro-machined gyroscope, the micro-machined accelerometer and the single-baseline GPS changes, and the angular rate information w of the carrier measured by the micro-machined gyroscope b , and then according to the angular rate in...

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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...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/16G01S19/47
CPCG01C21/165G01S19/47
Inventor 伍宗伟李卓群金伟张峰干姚敏立贾维敏田方浩闫志翔周淑华
Owner PLA SECOND ARTILLERY ENGINEERING UNIVERSITY
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