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Target geolocation method for airborne electro-optical system independent of active/passive ranging

An optoelectronic system and passive ranging technology, which is used in navigation, measurement devices, mapping and navigation through velocity/acceleration measurement, which can solve problems such as not being eliminated and increase algorithm complexity, and achieve less error sources and target positioning. high precision effect

Active Publication Date: 2021-07-16
中国兵器科学研究院
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Problems solved by technology

These methods improve the longitude of passive positioning of some targets, but increase the complexity of the algorithm, and the influence of relative height error on passive positioning has not been eliminated in essence

Method used

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  • Target geolocation method for airborne electro-optical system independent of active/passive ranging
  • Target geolocation method for airborne electro-optical system independent of active/passive ranging
  • Target geolocation method for airborne electro-optical system independent of active/passive ranging

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Embodiment 1

[0110] refer to figure 1 , the present embodiment provides an airborne electro-optical system target geolocation method that does not rely on active / passive ranging, and the principle is as follows:

[0111] When locating the target, control the airborne photoelectric system so that the line of sight cross presses the target to be positioned, and at the same time control the system to enter the target tracking or staring mode, and the target is always at the position of the crosshair of the line of sight during the movement of the carrier aircraft; then The airborne photoelectric system periodically collects the position information (including longitude, latitude and altitude), attitude information (including azimuth angle, pitch angle, roll angle) given by the current airborne inertial navigation equipment, and the angle information of the photoelectric platform (including roll angle and pitch angle, or azimuth and pitch angle), and record the first carrier position collected...

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Abstract

The invention belongs to the technical field of target positioning of an airborne optoelectronic system, and in particular relates to a geographical positioning method of an airborne optoelectronic system target that does not rely on active / passive ranging. In order to solve the target positioning problem of the airborne optoelectronic system based on active and passive ranging, this method continuously tracks or stares at the target, and periodically collects the current position and attitude information of the airborne optoelectronic system inertial navigation equipment. and the angle information of the optoelectronic platform; then, carry out space forward rendezvous at the positions of the two carrier aircraft, establish the baseline constraint equation, and calculate the plane coordinates of the target in the local northeast sky coordinate system in real time; finally, the ellipsoid mathematical model of the earth’s sea surface Next, the longitude, latitude and altitude of the target are calculated. The target positioning method proposed by the present invention does not rely on active and passive ranging of the target, so it is not limited by the laser range finder and is not affected by the relative height error of the carrier aircraft; there are few error sources, and it has the characteristics of high target positioning accuracy.

Description

technical field [0001] The invention belongs to the technical field of target positioning of an airborne optoelectronic system, and in particular relates to a geographical positioning method of an airborne optoelectronic system target that does not rely on active / passive ranging. Background technique [0002] The current conditions of information warfare put forward higher requirements for the use of airborne photoelectric reconnaissance / surveillance systems. How the airborne photoelectric reconnaissance / surveillance system can provide comprehensive and accurate target geographic location information in a timely manner is the first thing to do before carrying out precise strikes on the target. solved problem. [0003] Airborne optoelectronic system target positioning is mainly divided into two categories, one is the target active positioning algorithm based on laser ranging, and the other is the target passive positioning algorithm that does not rely on laser ranging. In so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/20G01C21/16
CPCG01C21/165G01C21/20
Inventor 王玉林王惠林姚军奎刘吉龙闫明任海龙
Owner 中国兵器科学研究院
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