Cited by 60Space Satellite Systems and ControlAdvanced Neural Network ApplicationsAdvanced Image and Video Retrieval Techniques

Revisiting Monocular Satellite Pose Estimation With Transformer

Wang, Zi, Zhang, Zhuo, Sun, Xiaoliang, Li, Zhang, Yu, Qifeng·2022·IEEE Transactions on Aerospace and Electronic Systems

Abstract

Convolutional neural networks (CNNs) have been adopted in monocular satellite pose estimation and achieve superior performance over traditional methods. However, existing CNN-based methods suffer from bias toward texture, indirect description of absolute distance, and lack of long-range dependence modeling. Such factors limit the generalizability of CNN-based methods. Motivated by the striking achievements of transformer models, this article adopts transformer blocks for satellite pose estimation from a single RGB image, proposing an efficient monocular satellite pose estimation method. First, we design an effective satellite representation model based on a set of keypoints. Then, considering monocular satellite pose estimation characteristics, we construct an end-to-end keypoint-set prediction network and build the bipartite loss function. Further, we improve the backbone structure for high-quality feature extraction. Experimental results on a public benchmark dataset indicate that the proposed method achieves second and third place on the synthetic and real test sets, respectively, using only synthetic training data. We also demonstrate that our keypoint predictor takes half as much time as the first-placed method in our comparison, and therefore achieves a better tradeoff between speed and accuracy than existing approaches.

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Crossref · 10.1109/taes.2022.3161605

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43 of 43 references verified0 citation errors · 0 not checkable

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  • Wang et al.'s transformer-based method consumes a lot of hardware resources and has more than 200 million trainable parameters, making it hard to use for space applications.

    “This work consumes a lot of hardware resources and has more than 200 million trainable parameters that make this architecture hard to use for space applications.”
  • Wang et al. [17] proposed a transformer architecture based on the DETR transformer.

    “Wang et al. [17] proposed a transformer architecture based on the DETR transformer.”
  • A PnP-based approach reported 150 ms per image (~7 FPS) on an NVIDIA RTX 2080Ti GPU and an i7-7700K CPU.

    “For example, one PnP-based approach [35] reported 150 ms per image ( ∼ 7 FPS) on a high-performance NVIDIA RTX 2080Ti GPU (peak draw 250 Watts) and an i7-7700K CPU, far exceeding the typical power budgets of a spacecraft ( ∼ 1-25 Watts).”
  • Existing state-of-the-art spacecraft pose estimation methods often rely on iterative PnP-based algorithms, which are computationally intensive and ill-suited for real-time deployment on resource-constrained edge devices.

    “Existing state-of-the-art methods often rely on iterative Perspective-n-Point (PnP)-based algorithms, which are computationally intensive and ill-suited for real-time deployment on resource-constrained edge devices.”
  • Previous satellite pose estimation approaches represent a satellite as a set of 2D keypoints and then estimate the satellite pose using PnP algorithms.

    “Meanwhile, previous satellite pose estimation approaches [12], [15] represent a satellite as a set of 2D keypoints, and then estimate the satellite pose using the perspective-n-point (PnP) algorithms [27].”

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Authors
Wang, Z., Zhang, Z., Sun, X., Li, Z., & Yu, Q.
Affiliations
National University of Defense Technology (CN)
Venue
IEEE Transactions on Aerospace and Electronic Systems
Published
2022-10
Volume
58
Issue
5
Pages
4279-4294
ISSN
  • 0018-9251 (ISSN-L)
  • 1557-9603
  • 2371-9877
OpenAlex
W4226098472
Cited by
59
References
43
Citations by year
2026: 14 · 2025: 23 · 2024: 11 · 2023: 10 · 2022: 1
FWCI
5.01
Type
journal article
Language
en
Open access
closed
Locations
IEEE Transactions on Aerospace and Electronic Systems (publishedVersion)
Funders
  • National Natural Science Foundation of China (62003357, 61801491)
  • Natural Science Foundation of Hunan Province (2019JJ50732, 2019JJ50728)
  • Postgraduate Scientific Research Innovation Project of Hunan Province (CX20200024, CX20200025, CX20200088)
Topics
  • Physical Sciences › Engineering › Aerospace Engineering › Space Satellite Systems and Control
  • Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Advanced Neural Network Applications
  • Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Advanced Image and Video Retrieval Techniques
Keywords
transformer models, synthetic training data, speed-accuracy trade-off

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