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Adaptive Integrated Navigation Antenna Beam Steering Method for Satellite Communication System in Motion

A satellite communication system and integrated navigation technology, which is applied in the field of adaptive integrated navigation antenna beam control, can solve the problems of limited attitude estimation accuracy, attitude estimation error, and difficulty in complete correction, and achieves simple and easy algorithm, stable performance, and improved performance. The effect of precision

Active Publication Date: 2019-10-15
PLA SECOND ARTILLERY ENGINEERING UNIVERSITY
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Problems solved by technology

The multi-sensor direct fusion attitude estimation algorithm is susceptible to interference from external factors such as maneuvering acceleration and sideslip angle, and it is difficult to completely correct the attitude estimation error, and the accuracy of attitude estimation is limited

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  • Adaptive Integrated Navigation Antenna Beam Steering Method for Satellite Communication System in Motion
  • Adaptive Integrated Navigation Antenna Beam Steering Method for Satellite Communication System in Motion
  • Adaptive Integrated Navigation Antenna Beam Steering Method for Satellite Communication System in Motion

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Embodiment Construction

[0019] The present invention is described in further detail below in conjunction with accompanying drawing:

[0020] refer to figure 1 , the adaptive integrated navigation antenna beam control method of the mobile communication satellite communication system of the present invention comprises the following steps:

[0021] 1) Establish the system equation of the satellite communication system in motion, the state quantity x of the integrated navigation attitude estimation system is selected as the position error δr of the carrier, the velocity error δv of the carrier and the attitude angle error ψ of the carrier, that is, x=[ δr, δv, ψ] T , then the system equation of the satellite communication system in motion is: In the formula: The system equation of the discrete integrated navigation attitude estimation system is: x k+1 = φ k x k +ω k , where φ k is the coefficient matrix, φ k =I 9×9 +F△t; △t is the sampling rate of MEMS sensor; ω k is the system noise;

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Abstract

The invention discloses an adaptive combination navigation antenna beam control method for a satellite communication in motion communication system. The method comprises the following steps: (1) building a system equation of the satellite communication in motion system, calculating the state variable x of a combination navigation attitude estimation system according to the position error amount deltar of a carrier, the speed error amount deltav of the carrier and the attitude angle error amount Psi of the carrier, and meanwhile setting the observed quantity of a satellite communication in motion combination navigation attitude estimation algorithm with a main controller; (2) building a corresponding satellite communication in motion combination navigation measurement equation according to different driving environments of the carrier, and solving a measurement equation coefficient matrix Hk; and (3) performing attitude computation through adaptive extended Kalman filter to obtain the three-dimensional attitude angle of the carrier, and controlling three motors to adjust the direction of antenna beams according to the three-dimensional attitude angle of the carrier in order that an antenna is aligned with a satellite. Through implementation of the method, accurate alignment between the antenna and the satellite can be realized, and the cost is low.

Description

technical field [0001] The invention belongs to the technical field of satellite communication system antenna beam control, and relates to an antenna beam control method, in particular to an adaptive combined navigation antenna beam control method for a satellite communication system in motion. Background technique [0002] With the advent of the information age and the rapid development of the new military revolution, people's demand for communication is increasing, and people urgently need to realize high-speed, high-bandwidth communication in mobile. However, the limited frequency band resources of mobile satellite communication, slow communication rate and high service cost seriously restrict the further development of mobile communication, which greatly stimulates the development of a new type of satellite communication terminal - Mobile Communication. Communication in motion is an important branch of satellite communication. It aims to use fixed satellite communication...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/06H04B7/185
Inventor 贾维敏赵建伟金伟王榕于强赵丽美郝路瑶赵鹏丁铭
Owner PLA SECOND ARTILLERY ENGINEERING UNIVERSITY
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