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Target positioning integrated calibration method for reconnaissance unmanned aerial vehicles

A target positioning and unmanned aerial vehicle technology, which is applied in the field of reconnaissance unmanned aerial vehicle target positioning integrated inspection, can solve problems such as the influence of real-time target positioning accuracy and installation axis angle error, so as to improve the real-time positioning accuracy and eliminate the installation axis angle error. , the effect of strong practicality

Active Publication Date: 2018-09-25
XIAN AISHENG TECH GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the influence of the installation axis angle error of optical fiber strapdown inertial navigation and photoelectric reconnaissance equipment on the real-time positioning accuracy of the target in the prior art, the present invention proposes an integrated calibration method for reconnaissance UAV target positioning

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  • Target positioning integrated calibration method for reconnaissance unmanned aerial vehicles
  • Target positioning integrated calibration method for reconnaissance unmanned aerial vehicles
  • Target positioning integrated calibration method for reconnaissance unmanned aerial vehicles

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Embodiment Construction

[0059] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:

[0060] The method steps involved in the present invention are as follows:

[0061] 1. Determine the calibration control point and use satellite differential positioning

[0062] In order to facilitate the implementation of the method, a single control point on the ground is used for calibration. The ground control point can choose a static 2.3mⅹ2.3m target or directly use the UAV ground control station. The control point adopts satellite differential positioning, and its positioning position is obtained as (X t , Y t ,Z t ), generally its accuracy can be controlled within 0.5m. UAV adopts satellite differential positioning + optical fiber strapdown inertial navigation combined navigation method for positioning, and its real-time position is (X b , Y b ,Z b ), its positioning accuracy can be controlled within 1m.

[0063] 2. Control drones and reconnaissa...

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Abstract

The invention relates to a target positioning integrated calibration method for reconnaissance unmanned aerial vehicles. The method includes: determining a calibration control point, controlling an unmanned aerial vehicle to track the calibration control point, and estimating a ground control point position through an acquired plane position, attitude, reconnaissance equipment azimuth angle and altitude angle, so that azimuth and attitude mounting errors can be obtained. By the effective method, mounting shaft angle errors can be eliminated, and real-time ground target positioning accuracy ofthe reconnaissance unmanned aerial vehicles can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of target positioning of an unmanned reconnaissance aircraft, and relates to an integrated calibration method for target positioning of a reconnaissance unmanned aerial vehicle. It is used to calibrate the installation angle error of optical fiber strapdown inertial navigation and reconnaissance equipment during the system integration process of small and medium unmanned reconnaissance aircraft. Background technique [0002] Small and medium-sized unmanned reconnaissance aircraft are mainly used for battlefield target positioning, providing target indication and fire guidance for firepower units, and require high target positioning accuracy. In order to improve the positioning accuracy, there are mainly methods such as dual-image cross positioning and laser multi-point ranging positioning. These methods can effectively eliminate system integration errors, especially external azimuth angle measurement errors....

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C25/00
CPCG01C25/005
Inventor 贾伟马夏莹肖佳伟
Owner XIAN AISHENG TECH GRP