Satellite optical fiber compass system and integrated navigation method thereof

A fiber optic compass system and integrated navigation technology, which is applied in the field of navigation and navigation, can solve problems such as being affected by environmental factors, output data discontinuity, and error accumulation, so as to reduce the risk of losing lock, overcome output discontinuity, and increase dimensions Effect

Inactive Publication Date: 2016-12-21
TIANJIN NAVIGATION INSTR RES INST
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AI Technical Summary

Problems solved by technology

The satellite compass has the characteristics of global, all-weather application and no error accumulation. Its disadvantage is that it will be affected by environmental factors, and it is prone to lose lock in bad weather, resulting in discontinuous output data.
The direction finding accuracy of optical fiber compass is higher than that of magnetic compass and gyro compass, and it is not affected by environmental interference such as ship magnetism. It is convenient to interface with other equipment on board. The disadvantage is that with the increase of latitude, there is error accumulation

Method used

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  • Satellite optical fiber compass system and integrated navigation method thereof
  • Satellite optical fiber compass system and integrated navigation method thereof
  • Satellite optical fiber compass system and integrated navigation method thereof

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Embodiment Construction

[0029] Embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings:

[0030] A satellite fiber optic compass system, such as Figure 1 to Figure 3 As shown, includes two GNSS antennas, satellite compass unit and fiber optic compass unit. The two GNSS antennas are used as satellite signal receiving devices and are installed separately along the longitudinal axis of the ship, and each GNSS antenna independently receives satellite positioning signals. The satellite compass unit is connected to two GNSS antennas through a coaxial cable, and is used to receive and calculate the position information of the two GNSS antennas, and then calculate the angle between the connection line between the two GNSS antennas and the true north direction (heading angle), the satellite compass unit is connected with the optical fiber compass unit at the same time, and sends the calculated heading, speed, position and time information. The...

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Abstract

The invention relates to a satellite optical fiber compass system and a combined navigation method thereof. Its technical characteristics are: the system includes two GNSS antennas, a satellite compass unit and an optical fiber compass unit, and the two GNSS antennas, satellite compass units and optical fiber compass units are connected in sequence Together; the integrated navigation method uses satellite direction finding information and fiber optic gyroscope information for error compensation and attitude calculation, and at the same time adds polar region processing design to obtain high-precision, high-reliability ship heading and attitude information. The invention is reasonable in design, it combines the advantages of satellite direction finding and optical fiber gyroscope, learns from each other, has the characteristics of high precision, fast start-up, convenient use, etc., can realize all-weather, full-latitude direction determination and attitude determination, and helps to ensure the navigation of ships Safety.

Description

technical field [0001] The invention belongs to the technical field of navigation and navigation, in particular to a satellite optical fiber compass system and a combined navigation method thereof. Background technique [0002] The compass is a navigation instrument on a ship to indicate the heading, and is an important equipment to ensure navigation safety. The International Maritime Organization (IMO) stipulates that ocean-going ships must be equipped with a compass. At present, most of the ship equipment uses traditional gyro compass products: magnetic compass and gyro compass. Magnetic compass is often affected by environmental factors such as earth and mine magnetic field, eddy current, sky electricity, etc., and the accuracy cannot be guaranteed; The error is relatively large, the price is expensive, the maintenance is frequent and the cost is high. [0003] Compared with traditional gyrocompass products, fiber optic gyrocompass and satellite compass have many advant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/33G01C19/72
CPCG01S19/33G01C19/72
Inventor 房媛媛邓东黎张文杰刘乃道
Owner TIANJIN NAVIGATION INSTR RES INST
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