Research on fast target positioning algorithm for air-to-ground photoelectric tracking platform

Shi-ze Dong; Chuan-gang Xu; Lian Chen; Jiang-peng Song

doi:10.1117/12.2580214

5 November 2020 Research on fast target positioning algorithm for air-to-ground photoelectric tracking platform

Shi-ze Dong, Chuan-gang Xu, Lian Chen, Jiang-peng Song

Proceedings Volume 11567, AOPC 2020: Optical Sensing and Imaging Technology; 115673N (2020) https://doi.org/10.1117/12.2580214
Event: Applied Optics and Photonics China (AOPC 2020), 2020, Beijing, China

Abstract

Air-to-ground photoelectric tracking platforms are often installed in unmanned aerial vehicles or various military weapons, and they play a major role in terrain mapping and military investigation. In the course of implementing tasks such as UAV reconnaissance and weapon strikes, the photoelectric tracking platform plays the role of identification and tracking. This paper proposes and compares the methods for calculating the position of the target detected by the platform based on the information of the photoelectric tracking platform attitude, the attitude of the platform carrier, such as the drone or the weapon body attitude, and the target distance. First, a conventional method is proposed, which is to obtain the target's latitude and longitude using coordinate transformation and other methods based on the information such as the target distance, platform and carrier attitude. In order to better meet the needs of rapidity, a method for obtaining the target latitude and longitude according to the distance of the target from the carrier in all directions is proposed. This method has a simple calculation process but a reduced accuracy. To ensure accuracy on the basis of improving real-time performance, consider For the spherical nature of the earth, a method of using spherical triangles to solve the target position is also proposed. Finally, use actual measured data to test and compare the practicability and accuracy of various methods. After testing, the three methods can achieve precise positioning of the target and meet the performance indicators.

Citation Download Citation

Shi-ze Dong, Chuan-gang Xu, Lian Chen, and Jiang-peng Song "Research on fast target positioning algorithm for air-to-ground photoelectric tracking platform", Proc. SPIE 11567, AOPC 2020: Optical Sensing and Imaging Technology, 115673N (5 November 2020); https://doi.org/10.1117/12.2580214

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KEYWORDS

Target detection

Detection and tracking algorithms

Navigation systems

Reconnaissance

Unmanned aerial vehicles

Distance measurement

Optical tracking

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