GNSS/IMU integrated unmanned aerial vehicle surveying and mapping method and system

A technology of UAV and GPS data, which is applied in the direction of radio wave measurement system, satellite radio beacon positioning system, measurement device, etc., which can solve the problems of application area limitation, difficulty of mapping accuracy to meet the needs of surveying and mapping engineering, poor stability, etc.

Inactive Publication Date: 2014-12-24
CHINA GEOHARMONY TECH CO LTD
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Problems solved by technology

Since the stability of the UAV platform is worse than that of large aircraft, UAV surveying and mapping is very dependent on the layout of ground control points, which has caused great restrictions on its application area, especially in mountainous

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  • GNSS/IMU integrated unmanned aerial vehicle surveying and mapping method and system
  • GNSS/IMU integrated unmanned aerial vehicle surveying and mapping method and system
  • GNSS/IMU integrated unmanned aerial vehicle surveying and mapping method and system

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[0024] GNSS positioning technology and inertial navigation technology (IMU) are the core technologies for the UAV system to realize the requirement of reducing ground control points or even no ground control points. In the field of large aircraft aerial survey, the POS positioning and orientation technology based on the integration of IMU / DGNSS (differential positioning system) has been fully valued and developed under this background. The integration of POS system and digital aerial camera has become indispensable for aerial photogrammetry. It can perform direct geolocation and realize direct orientation placement mapping without ground control points. In the field of unmanned aerial vehicles, there are systematic errors in the position and attitude parameters obtained by the POS system, and these positioning and orientation parameters are not the external orientation elements of the aerial photos. They need to be converted according to the spatial position relationship betwee...

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Abstract

The invention discloses a GNSS/IMU integrated unmanned aerial vehicle surveying and mapping method and system. A GNSS and an IMU system are integrated on an unmanned aerial vehicle, a ground static GNSS base station is arranged on a surveying and mapping area, parameters of the ground static GNSS base station, parameters of an airborne GNSS terminal and IMU parameters of the unmanned aerial vehicle are collected and recorded synchronously, the parameters are guided into conventional unmanned aerial vehicle surveying and mapping software for automatic processing, the requirement for surveying and mapping imaging precision of the unmanned aerial vehicle is met, and the problem that the surveying and mapping precision can not be ensured by setting a ground control point when surveying and mapping of the unmanned aerial vehicle are performed on bad terrain areas such as mountains and hills is solved.

Description

technical field [0001] The invention relates to a small unmanned aerial vehicle surveying and mapping technology, in particular to a method and system for GNSS / IMU integrated unmanned aerial vehicle surveying and mapping. Background technique [0002] At present, UAV surveying and mapping is a relatively common technical means in the field of surveying and mapping. Since the stability of the UAV platform is worse than that of large aircraft, UAV surveying and mapping is very dependent on the layout of ground control points, which has caused great restrictions on its application area, especially in mountainous and densely forested areas, where the terrain is difficult and dangerous , the ground control point collectors cannot reach the collection area, which makes the accuracy of mapping difficult to meet the needs of surveying and mapping engineering. With the rapid development of global positioning technology and inertial navigation technology, as well as the research and ...

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Application Information

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IPC IPC(8): G01S19/47
CPCG01S19/47
Inventor 黄建辉李丽杨立波
Owner CHINA GEOHARMONY TECH CO LTD
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