An Aerial Target Localization Method Using TOA and AOA Measurements with GEO-UAV Bistatic Configuration
Based on multi-station spatial diversity capability, GEO-UAV distributed radar could achieve high-precision aerial target localization with the single-transmitting and multiple-receiving configuration. However, the actual observation area can hardly be covered by several receiving stations simulta...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Stefan cel Mare University of Suceava
2024-11-01
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| Series: | Advances in Electrical and Computer Engineering |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.4316/AECE.2024.04002 |
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| Summary: | Based on multi-station spatial diversity capability, GEO-UAV distributed radar could achieve high-precision aerial target
localization with the single-transmitting and multiple-receiving configuration. However, the actual observation area
can hardly be covered by several receiving stations simultaneously. Thus, it is necessary to explore a novel target
localization method under a single receiving station condition. In this manuscript, an aerial target localization
method with GEO-UAV bistatic configuration is presented, where ТOА and AOA measurements are employed. Firstly,
measurement models, including bistatic range-delay, pitching AOA, and azimuth AOA, are established using the
spatial geometric relationship between the bistatic radar and the target. Then, the receiving range can be
estimated using digital beamforming technology based on the receiving array antenna, where the antenna beam coverage
information and the prior target altitude information are combined. Finally, the three-dimensional target localization
is skillfully derived according to the bistatic configuration, and thus to avoid the parameter unrecognizable problem
caused by insufficient degrees of freedom. The proposed algorithm fully exploits the intrinsic correlation characteristics
between the measurement information and the bistatic configuration, which provides an effective way for aerial target
localization. Simulation results verify the effectiveness of the proposed algorithm. |
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| ISSN: | 1582-7445 1844-7600 |