A method for estimating the installation error angle of communication antenna in motion
A technology of installation error angle and communication in motion, which is applied in the field of satellite communication and measurement and control, can solve complex and cumbersome problems, achieve good adaptability, overcome small angle error requirements, and reduce workload
Active Publication Date: 2022-05-27
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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Problems solved by technology
In order to measure these errors, special calibration methods need to be used, and most of the existing calibration methods are relatively complicated and cumbersome to implement
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[0046] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0047] A method for estimating the installation error angle of an antenna in motion, such as figure 2 shown, which includes the following steps:
[0048] (1) collect the azimuth rotation angle of the antenna, the angular velocity and the specific force data output by the inertial measurement unit installed on the antenna that rotates with the antenna azimuth, and obtain the attitude data of the antenna installation plane;
[0049] (2) Compare the attitude data of the navigation equipment on the antenna installation carrier with the attitude data of the antenna installation plane, if a certain item of data differs by more than 3°, perform coordinate transformation on the attitude data of the navigation equipment on the carrier, to satisfy the small angle error model;
[0050] (3) Establish the state space ...
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The invention discloses a method for estimating the installation error angle of an antenna in motion, and belongs to the technical field of satellite communication and measurement and control. The method installs the inertial measurement unit on the azimuth rotation platform of the antenna in motion, uses the output information of the navigation equipment on the antenna installation carrier as the external observation information, establishes a transfer alignment algorithm model suitable for any installation error angle, and estimates the antenna The installation error angle of the installation plane, and at the same time, error compensation is performed on the results of the strapdown navigation algorithm of the inertial measurement unit. The invention overcomes the requirement of small angle error when Kalman filter is used for attitude matching transfer and alignment by rotating and transforming the navigation equipment on the antenna installation carrier, and has the advantages of simple implementation and wide application range.
Description
technical field [0001] The invention belongs to the technical field of satellite communication and measurement and control, in particular to a method for estimating the installation error angle of an antenna in motion. This method can be applied to the mobile communication antenna, and is used to measure the installation error angle between the antenna installation surface and the antenna installation carrier. Background technique [0002] In most applications in the field of satellite communication and measurement and control, it is required to realize precise measurement and control of antenna pointing. In particular, in the fields of vehicle-mounted, ship-borne, and airborne satellite communications in motion, most of the antenna installation carriers have relatively accurate navigation equipment such as inertial navigation systems, which are used to measure the attitude information of the carrier and provide it to the The antenna is used to compensate the pointing angle...
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IPC IPC(8): G01C1/00G01C25/00
CPCG01C1/00G01C25/005
Inventor 秦超张硕黄元庆闫少雄王一焕许海深刘宁
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP