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Correction Method of UAV Telemetry Parameters Based on Online Calibration

A technology for telemetry parameters and drones, applied in the direction of measuring devices, instruments, etc., can solve problems such as inability to limit accuracy, lack of precise geographic coordinates, and drone telemetry parameter errors to improve positioning accuracy and applicability. strong effect

Active Publication Date: 2018-02-16
BEIHANG UNIV
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  • Application Information

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Problems solved by technology

Although the target can be found and identified by using the reconnaissance image of the UAV, due to the influence of various external factors at the time of imaging, there are errors in the various telemetry parameters of the UAV, and there is no precise geographical coordinate, so the limit value cannot be reached. The accuracy of subsequent operations such as target positioning

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  • Correction Method of UAV Telemetry Parameters Based on Online Calibration
  • Correction Method of UAV Telemetry Parameters Based on Online Calibration
  • Correction Method of UAV Telemetry Parameters Based on Online Calibration

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Embodiment Construction

[0027] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0028] The present invention is a UAV telemetry parameter correction method based on online calibration, the process is as follows image 3 Firstly, when the UAV has a flight aerial photography mission, it first flies over the area where the control points are arranged according to the pre-planned route, and obtains multiple aerial images containing ground control points under different attitudes. Afterwards, the invention combines the resection with aircraft information, thereby extending from the situation of vertically looking down from the aircraft to a wider range of aircraft flying and shooting situations. For the errors of the obtained telemetry parameters, the invention uses the idea of ​​least squares fitting to perform regression, thereby realizing error compensation for subsequent telemetry parameters. The present invention includes...

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Abstract

The invention discloses a method for correcting UAV telemetry parameters based on online calibration, and belongs to the technical field of digital video image processing. This method first installs ground control points based on information such as the flight height and focal length of the UAV, and then flies according to the planned route and screens the obtained images to obtain a small amount of representative image data, and then the obtained images according to The idea of ​​spatial resection is used to analyze the error of each telemetry parameter of the UAV, so as to obtain the corresponding error prediction model. The present invention uses the idea of ​​online calibration to obtain the image data required for establishing an error prediction model, thereby obtaining the prediction model of each remote measurement parameter of the drone, and correcting each remote measurement parameter. This allows for a certain degree of precision in the subsequent steps of operating with the drone's telemetry parameters.

Description

technical field [0001] The invention belongs to the technical field of digital video image processing, and in particular relates to a method for correcting UAV telemetry parameters based on online calibration. Background technique [0002] UAVs have a wide range of application values ​​in both military and civilian applications, and have long been a hot research project of many institutions and organizations at home and abroad. [0003] Reconnaissance is the inherent mission of UAVs. UAV reconnaissance images have become an important means of quickly and effectively obtaining intelligence, and have played an increasingly important role in previous local wars. Although the target can be found and identified by using the reconnaissance image of the UAV, due to the influence of various external factors at the time of imaging, there are errors in the various telemetry parameters of the UAV, and there is no precise geographical coordinate, so the limit value cannot be reached. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C25/00
CPCG01C25/00
Inventor 丁文锐刘家良向锦武李红光
Owner BEIHANG UNIV