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Underwater geomagnetic positioning and navigation device

A navigation device, positioning and navigation technology, applied in ground navigation, navigation calculation tools, etc., can solve the problems of high cost and high environmental requirements, and achieve the effects of strong impact resistance, high sensitivity, and high precision

Inactive Publication Date: 2011-11-23
BEIJING GUOHAO SENSOR TECH RES INST GENERAL PARTNERSHIP
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Problems solved by technology

The system has a reasonable design and relatively accurate positioning, but it is expensive and has high environmental requirements

Method used

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  • Underwater geomagnetic positioning and navigation device
  • Underwater geomagnetic positioning and navigation device
  • Underwater geomagnetic positioning and navigation device

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Embodiment Construction

[0024] This patent is mainly divided into three parts: data collection, model building and matching positioning and navigation. attached figure 1 It is the overall structure of the underwater geomagnetic positioning and navigation device. The shell of the airship is mainly made of epoxy resin, 1 is the resonant micro-magnetic sensor, which is sealed and packaged in an aluminum shell, 2 is the drag rod, which is also made of epoxy resin, 3 is the airship tail rudder, it and 7 The horizontal tail controls the direction and attitude of the airship together, and they are controlled by the rudder controller 5, the 4 is the low-frequency wireless positioning receiving coil, and the 6 is the traction ring, which can connect the airship and the mothership through cables. The airship is towed behind the mother ship by a cable about 50m long, and is positioned by a low-frequency magnetic communication receiving device. At the same time, the collected geomagnetic data is transmitted to ...

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Abstract

A novel underwater geomagnetic positioning and navigation device. The system performs mother boat positioning based on a novel MEMS resonant micro-magnetic sensor and low-frequency magnetic communication technology; an airship is dragged by the mother boat through a mooring rope; and therefore the underwater geomagnetic field is measured by three-component measurement, and a total intensity F is calculated; a comprehensive base map is formed by the superposition of a curved surface Spline model and an actual distribution map established based on F; matching, positioning and navigation are performed by means of single-point matching, image matching (Homography Algorithm, Imaging Mosaic Algorithm) and the like; and finally video output is performed.

Description

technical field [0001] The invention relates to the technical fields of underwater geomagnetic positioning, magnetic communication, a resonant micro-magnetic sensor, a geomagnetic model, and the like. Background technique [0002] Underwater positioning is of great value for navigation, exploration, and even national defense. At present, commonly used underwater positioning methods such as GPS buoy-ultrasonic relay positioning, GPS buoy-cable positioning, underwater low-frequency wireless positioning, etc. Among them, the more commonly used GPS buoy-ultrasonic relay positioning technology has high positioning accuracy, but There are ultrasonic signals that are susceptible to detection problems, making it difficult to locate and navigate submarines. In recent years, technologies related to underwater positioning and navigation have been research hotspots all over the world. In December 2009, Smith and others applied for a patent (patent number: US7626545) for accurate positi...

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Application Information

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IPC IPC(8): G01C21/08G01C21/20
Inventor 冯彦韩跃段远征范瀚卿刘晨李世伦郑强余勇郎美琴
Owner BEIJING GUOHAO SENSOR TECH RES INST GENERAL PARTNERSHIP
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