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Self-calibration method of inertial navigation system for mobile satellite communication

A technology for mobile satellite communication and inertial navigation systems, which is applied to measurement devices, instruments, etc., can solve the problems of inconvenient installation and maintenance of inertial navigation systems, unobservable static bases, and accumulation of nonlinear errors of gyroscopes, so as to avoid the problems of gyroscopes. Accumulation of nonlinear errors, compact structure, solving the effect of installation and maintenance

Inactive Publication Date: 2015-05-06
AKD COMM TECH
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AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the inertial navigation system of the existing mobile communication system is not easy to install and maintain, the zero offset of the static base is initially aligned with the horizontal accelerometer, and the non-linear error of the gyroscope of the inertial navigation system is accumulated. question

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  • Self-calibration method of inertial navigation system for mobile satellite communication
  • Self-calibration method of inertial navigation system for mobile satellite communication
  • Self-calibration method of inertial navigation system for mobile satellite communication

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Embodiment Construction

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are invented. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0019] Such as figure 1 As shown, the present embodiment discloses a self-calibration method of an inertial navigation system in motion, including:

[0020] S1. Roughly align the inertial navigation system of the mobile communication system; wherein, the inertial navigation system is installed in the center of the antenna turntable base of the mobile communication syst...

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Abstract

The invention discloses a self-calibration method of an inertial navigation system for mobile satellite communication to solve the problems that the inertial navigation system of the existing satellite communication in motion system is inconvenient to mount and maintain, the zero-deflection of a static base initial alignment accelerometer cannot be observed, and nonlinear errors of a gyroscope of the inertial navigation system are accumulated. The self-calibration method of the inertial navigation system for the mobile satellite communication comprises the following steps: performing coarse alignment on the inertial navigation system of the satellite communication in motion system, wherein the inertial navigation system is arranged in the center of an antenna turntable base of the satellite communication in motion system and is in bilateral symmetry relative to a medial surface of an antenna surface, and the yaw pointing of the inertial navigation system is consistent with the axial direction of an antenna; and after the coarse alignment, performing online calibration and online compensation on the inertial navigation system by adopting a rotary base alignment method.

Description

technical field [0001] The invention relates to the technical field of mobile satellite communication, in particular to an inertial navigation system self-calibration method for mobile satellite communication. Background technique [0002] Due to the increasing progress of human activities, people are no longer satisfied with only communicating in a fixed place, and have begun to pursue mobile communication methods. Therefore, people have begun to set up base stations in densely populated areas to cover wireless signals, so that they can communicate through mobile phones. , notebooks and other mobile devices to communicate and obtain information. However, due to the limitation of cost and conditions, such measures cannot be realized in some sparsely populated areas and on the sea. Under such circumstances, people think of using satellite communication to overcome it. However, the characteristics of satellite communication determine that the ground station needs to keep alig...

Claims

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Application Information

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IPC IPC(8): G01C25/00
CPCG01C25/005
Inventor 张金余
Owner AKD COMM TECH
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