Precise GPS-Denied UAV Self-Positioning via Context-Enhanced Cross-View Geo-Localization

Yuanze Xu; Ming Dai; Wenxiao Cai; Wankou Yang

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arXiv · 2502.11408

Precise GPS-Denied UAV Self-Positioning via Context-Enhanced Cross-View Geo-Localization

Yuanze Xu·Ming Dai·Wenxiao Cai·Wankou Yang

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Abstract

Image retrieval has been employed as a robust complementary technique to address the challenge of Unmanned Aerial Vehicles (UAVs) self-positioning. However, most existing methods primarily focus on localizing objects captured by UAVs through complex part-based representations, often overlooking the unique challenges associated with UAV self-positioning, such as fine-grained spatial discrimination requirements and dynamic scene variations. To address the above issues, we propose the Context-Enhanced method for precise UAV Self-Positioning (CEUSP), specifically designed for UAV self-positioning tasks. CEUSP integrates a Dynamic Sampling Strategy (DSS) to efficiently select optimal negative samples, while the Rubik's Cube Attention (RCA) module, combined with the Context-Aware Channel Integration (CACI) module, enhances feature representation and discrimination by exploiting interdimensional interactions, inspired by the rotational mechanics of a Rubik's Cube. Extensive experimental validate the effectiveness of the proposed method, demonstrating notable improvements in feature representation and UAV self-positioning accuracy within complex urban environments. Our approach achieves state-of-the-art performance on the DenseUAV dataset, which is specifically designed for dense urban contexts, and also delivers competitive results on the widely recognized University-1652 benchmark.

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Yuanze Xu, Ming Dai, Wenxiao Cai, Wankou Yang. 2025-02-17. Precise GPS-Denied UAV Self-Positioning via Context-Enhanced Cross-View Geo-Localization. https://arxiv.org/abs/2502.11408

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