Marine inertia-gravity integrated navigation device

A combined navigation and inertial technology, applied in navigation, surveying devices, surveying and navigation, etc., can solve the problems of large volume, complex structure and high cost of the gravity-assisted navigation system, and achieve the effect of simple structure, small size and convenient maintenance

Inactive Publication Date: 2010-07-07
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The gravity-assisted navigation system developed by the United States is not only large in size and complex in structure, but also very expensive

Method used

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  • Marine inertia-gravity integrated navigation device
  • Marine inertia-gravity integrated navigation device
  • Marine inertia-gravity integrated navigation device

Examples

Experimental program
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Embodiment Construction

[0012] The two-ring inertial platform system 1 uses two single-degree-of-freedom liquid floating gyroscopes 8, a single-axis rate fiber optic gyroscope 9, and three single-axis quartz flexible pendulum accelerometers 10 as sensors for angular motion and linear motion of the sensitive carrier. Sensors, they are placed on the table body, the sensitive axes of the two single-degree-of-freedom liquid floating gyroscopes are parallel to the pitch axis and the roll axis respectively, and the sensitive axes of the single-axis rate fiber optic gyroscope are perpendicular to the horizontal plane of the table body. The sensitive axes of the three uniaxial quartz flexible pendulum accelerometers are respectively parallel to the pitch axis, the roll axis of the platform body and the vertical axis of the horizontal plane of the platform body. The table body is supported by a horizontal ring frame, and the horizontal ring frame is supported by a ring frame fixedly connected with the carrier....

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Abstract

The invention relates to a marine inertia-gravity integrated navigation device, which consists of a dual-ring inertial platform system, a gravity sensor, a Doppler log, a deep sounding apparatus, a digital gravity anomaly chart, an integrated navigation computer and a display terminal. The inertial measurement sensor of the dual-ring inertial platform system is a liquid floated gyroscope, a rate fiber optic gyroscope and a quartz flexible pendulous accelerometer. The device not only can be used to position and orient ocean motion carriers, but also can be used to measure marine gravity. Moreover, the device has the advantages of small size, high precision, good reliability, simple structure and easy maintenance, and has a wide scope of application in the technical field of navigation and control.

Description

technical field [0001] The invention is a marine inertia gravity combined navigation device, which has the function of passive navigation, positioning and orientation, and is suitable for the technical fields of navigation and control and marine gravity measurement. Background technique [0002] The development of today's society requires surface and underwater motion carriers to be able to achieve high-precision, autonomous, all-weather, and silent navigation. In order to realize autonomous navigation, inertial navigation system is generally used, which can provide a variety of navigation information such as heading, speed, position and attitude in real time. However, the positioning error of the inertial navigation system will accumulate over time, and it needs to be corrected regularly using external signals, otherwise the positioning accuracy will decrease. Compared with starlight, terrain field and geomagnetic field information, gravity field information has strong ant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/00G01C21/16G01C21/18G01C21/20
Inventor 蔡体菁
Owner SOUTHEAST UNIV
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