COTM satellite communication system cascade Kalman filtering carrier attitude estimation method

A satellite communication system, Kalman filtering technology, applied in satellite radio beacon positioning systems, radio wave measurement systems, measurement devices, etc. Improve the accuracy, meet the beam pointing requirements of the moving-in-pass antenna, and have the effect of high attitude estimation accuracy

Inactive Publication Date: 2015-12-16
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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  • COTM satellite communication system cascade Kalman filtering carrier attitude estimation method
  • COTM satellite communication system cascade Kalman filtering carrier attitude estimation method
  • COTM satellite communication system cascade Kalman filtering carrier attitude estimation method

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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 cascaded Kalman filter carrier attitude estimation method of the satellite communication system in motion according to the present invention comprises the following steps:

[0021] 1) The main controller sets the integrated navigation attitude estimation algorithm to obtain the Kalman filter system equation for the independent estimation of the heading angle, and then establishes the Kalman filter measurement equation ψ for the independent estimation of the heading angle m = ψ GPS +v, where ψ m Kalman filter measurements estimated separately for the heading angle, ψ GPS is the pseudo heading angle obtained by single-antenna GPS measurement, and v is zero-mean Gaussian white noise;

[0022] 2) The sideslip angle in the separate estimation of the heading angle is removed by the heading angle gyro, then the pseudo-heading angle observation...

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Abstract

The invention discloses a COTM ( Communication On The Move) satellite communication system cascade Kalman filtering carrier attitude estimation method. The method comprises steps that, 1), a combination navigation attitude estimation algorithm is set by a main controller to acquire an individually-estimated Kalman filtering system equation of a course angle, and an individually-estimated Kalman filtering measurement equation Psim=PsiGPS+v of the course angle is then established; 2), an individually-estimated sideslip angle of the course angle is removed through a course angle gyro, a pseudo course angle observation noise variance setting value of a Kalman filter can be represented in a formula shown in the description; and 3), resolution is carried out by utilizing expansion Kalman filtering according to pseudo course angle observation noise variance setting value in the Kalman filter, a weight switch mu, the individually-estimated Kalman filtering system equation of the course angle and the individually-estimated Kalman filtering measurement equation of the course angle to acquire a three-dimensional attitude angle of a carrier, a motor is controlled according to the three-dimensional attitude angle of the carrier to adjust a wave beam direction of an antenna, so the antenna is aligned with a satellite. The method can realize accurate alignment of the antenna and the satellite, and cost is low.

Description

technical field [0001] The invention belongs to the technical field of satellite communication system antenna beam control, and relates to a cascaded Kalman filter carrier attitude estimation method for a satellite communication system in motion. Background technique [0002] Throughout the ages, the importance of information to warfare has been well known. Whether it is beacon towers, signal flags, message trees, or radar stations, radios, GPS / BeiDou, although the means are different, the purpose is the same, that is, to "inform" the commanders and fighters. With the development of science and technology, high-firing weapons and long-range precision weapons continue to appear. On the one hand, combat troops are required to be dispersed and deployed flexibly to improve survivability; platform, a weapon platform dedicated to strike, and a combat platform that combines sensor and weapon functions. The differentiation of weapon systems and the dispersion and mobility of comba...

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Application Information

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IPC IPC(8): G01S19/47
CPCG01S19/47
Inventor 姚敏立伍宗伟张峰干田方浩郝路瑶赵鹏熊雄闫志翔
Owner PLA SECOND ARTILLERY ENGINEERING UNIVERSITY
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