Target positioning method and device for airborne equipment

Abstract

The invention relates to a target positioning method and a target positioning device for airborne equipment. The device comprises a signal processing unit, a laser distance measuring instrument, a thermal infrared imager, a visible light camera, a combined inertial navigation module and an angle meter, wherein output signals of the laser distance measuring instrument, the thermal infrared imager, the visible light camera, the combined inertial navigation module and the angle meter are all connected to the signal processing unit, and the signal processing unit is used for solving positional information of a target according to uploaded signals. Aerial carrier global positioning system (GPS) information, aerial carrier gesture information, angular deviation of observation equipment relative to an aerial carrier and distance measuring information of the target by the observation equipment are integrated to realize accurate positioning of longitude and latitude height of the target. The advantage of a multi-sensor is combined, a multi-dimensional spatial alternation principle is utilized so as to rapidly and effectively realize accurate target positioning in a non-contact and high-adaptability way, and the target positioning method can be applied to fields such as forest fire prevention, personnel rapid search and rescue and the like, and has wide technological and market prospects.

Description

technical field [0001] The invention belongs to the technical field of accurate target measurement and positioning, and relates to a target positioning method and device for airborne equipment. Background technique [0002] At present, the commonly used target positioning technology at home and abroad is mostly concentrated in the application field of a single sensor. For example, the laser ranging technology transmits a modulated optical signal to the measurement target through the laser transmitting system. After reaching the measurement target, it returns through diffuse reflection and is received by the receiving system. The optical signal is converted into an electrical signal, and then sent to the signal processing circuit for signal processing to calculate the linear distance between the emission point and the target; the image processing technology is used to obtain the pixel offset of the target from the center of the image, combined with the size of the imaging devi...

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Problems solved by technology

[0003] However, there are certain problems in the above technologies. For example, obtaining the straight-line distance or deviating from the center angle of the field of view is only applicable to some special application fields; there is a large error in calculating the straight-line distance through the prior knowledge of images and targets, and it can only be applied to special fields; Binding GPS communication equipment to targets is also an "impossible task" in the fields of personnel search and rescue, forest fire monitoring, and target strikes.

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