Radar Image Positioning Method on Decent Trajectory Based on Euler Tetrahedron

RAN Dan; DENG Huan; LI Yachao; QUAN Yinghui; XING Mengdao

doi:10.11999/JEIT160512

Volume 39 Issue 3

Mar. 2017

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Article Navigation > Journal of Electronics & Information Technology > 2017 > 39(3): 677-683

RAN Dan, DENG Huan, LI Yachao, QUAN Yinghui, XING Mengdao. Radar Image Positioning Method on Decent Trajectory Based on Euler Tetrahedron[J]. Journal of Electronics & Information Technology, 2017, 39(3): 677-683. doi: 10.11999/JEIT160512

Citation:

RAN Dan, DENG Huan, LI Yachao, QUAN Yinghui, XING Mengdao. Radar Image Positioning Method on Decent Trajectory Based on Euler Tetrahedron[J]. Journal of Electronics & Information Technology, 2017, 39(3): 677-683. doi: 10.11999/JEIT160512

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Radar Image Positioning Method on Decent Trajectory Based on Euler Tetrahedron

doi: 10.11999/JEIT160512

Funds:

The National Natural Science Foundation of China (61471283, 61303035)

Received Date: 2016-05-19
Rev Recd Date: 2016-09-30
Publish Date: 2017-03-19

Abstract

Abstract

There is a large deviation between the actual position of the missile and inertial guidance position in the final guidance stage due to the inertial navigation error, which influences seeker,s accurate on positioning to the target, so it can not meet the application needs of precision strike. Due to the special imaging geometry of the missile borne Synthetic Aperture Radar (SAR) in the descending section, the squint angle plane of the target point is different from the imaging plane, so the traditional positioning method based on Doppler angle measurement is no longer applicable. This paper uses image matching to obtain high precision ground point relative position information and the high precision slant range information between radar and target point. By constructing a Euler tetrahedral geometry model, using the scene digital elevation as a priori information to screen the reference point, the actual position of the missile in the established North-sky-East coordinate system with an origin of the target point is calculated. Then it can provide accurate information for the missile maintenance. Simulation results show that this method can meet the requirements of target positioning on missile terminal guidance stage well.
- Spotlight Synthetic Aperture Radar (SAR),
- Image matching,
- Decent section of missile-borne,
- Positioning

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References(33)

References

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