A5042474122- Inertial Sensor and Navigation
- Infrared Target Detection Methodologies
- Astronomical Observations and Instrumentation
- Advanced Vision and Imaging
- Optical Systems and Laser Technology
- Optical measurement and interference techniques
- Robotics and Sensor-Based Localization
- Calibration and Measurement Techniques
- Image Processing Techniques and Applications
- Advanced Measurement and Detection Methods
- Adaptive optics and wavefront sensing
- Space Satellite Systems and Control
- CCD and CMOS Imaging Sensors
- Planetary Science and Exploration
- Advanced Image and Video Retrieval Techniques
- Aerospace Engineering and Control Systems
- Image and Object Detection Techniques
- Advanced Image Processing Techniques
- Robotic Path Planning Algorithms
- Geophysics and Sensor Technology
- Target Tracking and Data Fusion in Sensor Networks
- Image and Signal Denoising Methods
- Color Science and Applications
- Orbital Angular Momentum in Optics
- Advanced Image Fusion Techniques
Institute of Optics and Electronics, Chinese Academy of Sciences
2016-2025
Chinese Academy of Sciences
2016-2025
University of Chinese Academy of Sciences
2009-2025
Beijing Institute of Optoelectronic Technology
2023-2024
Integrated Optoelectronics (Norway)
2024
Jiangsu University
2014-2016
Chinese Academy of Social Sciences
2011
Southwest University of Science and Technology
2007
This article presents a new sensor fusion method for visual simultaneous localization and mapping (SLAM) through integration of monocular camera 1D-laser range finder. Such as provides the scale estimation drift correction it is not limited by volume, e.g., stereo constrained baseline overcomes depth problem associated with SLAM RGBD cameras. We first present analytical feasibility estimating absolute 1D distance information image information. Next, derivation laser-vision described in...
Stripe-like space target detection (SSTD) plays a crucial role in advancing situational awareness, enabling missions like satellite navigation and debris monitoring. Existing unsupervised methods often falter low signal-to-noise ratio (SNR) conditions, while fully supervised approaches require extensive labor-intensive pixel-level annotations. To address these limitations, this paper introduces MRSA-Net, novel encoder-decoder network specifically designed for SSTD. MRSA-Net incorporates...
The terrain camera (TCAM) and panoramic (PCAM) are two of the major scientific payloads installed on lander rover Chang'e 3 mission respectively. They both use a Bayer color filter array covering CMOS sensor to capture images Moon's surface. RGB values original related these kinds cameras. There is an obvious difference compared with human visual perception. This paper follows standards published by International Commission Illumination establish correction model, designs ground calibration...
China's first Mars exploration mission will carry out comprehensive global surveys of the planet from data collected by instruments carried in orbit and roving on itself. Goals include detailed inspections key areas surface Mars. One main scientific payloads installed orbiter is moderate resolution camera. Its to image sufficiently produce a remote sensing map planet, explore record changes topography Mars, including major geological structures, advance research geomorphology general. The...
For the orbit operation of spacecraft, due to environmental factors, a star sensor installed on spacecraft must have data censoring, which greatly reduces attitude determination ability traditional combined-attitude-determination algorithm. To address this problem, paper proposes an algorithm for high-precision estimation based Tobit unscented Kalman filter. This is basis establishing nonlinear state equation integrated and gyroscope navigation system. The measurement update process filter...
High-precision lunar scene 3D data are essential for exploration and the construction of scientific research stations. Currently, most existing from orbital imagery offers resolutions up to 0.5–2 m, which is inadequate tasks requiring centimeter-level precision. To overcome this, our focuses on using in situ stereo vision systems finer reconstructions directly surface. However, scarcity homogeneity available surface datasets, combined with Moon’s unique conditions—such as variable lighting...
Camera calibration is a necessary process in the field of vision measurement. In this paper, we propose flexible and high-accuracy method to calibrate camera. Firstly, compute center radial distortion, which important obtain optimal results. Then, based on distortion division model, camera intrinsic parameters coefficients are solved linear way independently. Finally, optimized via Levenberg-Marquardt algorithm. proposed method, successfully decoupled; accuracy further improved through...
Monocular vision is one of the most commonly used noncontact six-degrees-of-freedom (6-DOF) pose estimation methods. However, large translational DOF measurement error along optical axis camera its main weaknesses, which greatly limits accuracy monocular measurement. In this paper, we propose a novel and 1D laser rangefinder (LRF) fusion strategy to overcome weakness design remote ultra-high precision cooperative targets 6-DOF sensor. Our approach consists two modules: (1) feature module...
Attitude update rate is one of the important indicators star sensor performance. In order to resolve problem low attitude sensors, this paper proposes a method based on point correction rolling shutter exposure. Based characteristics asynchronous exposure shutter, recursive estimation motion and corrected information were combined realize multiple updates in single frame map. Simulation experimental results proved that proposed could increase by 15 times, up 150 Hz.
In the South Atlantic Anomaly (SAA) area, due to influence of transient noise caused by space radiation, a star sensor can easily stay in lost-in-space (LIS) mode for long time. To solve this problem, paper proposes fast identification (FSI) algorithm. First, suppression method based on scale assessment and neighborhood comparison is developed. Next, accurate search technique multiple main stars k-vector used realize identification. The builds self-defined attribute database stars, repeated...
The interference caused by stray light leads to the invalid attitude of star sensors in orbit, thus affecting control satellites. In order overcome this problem, paper proposes a fast star-detection algorithm with strong stray-light suppression ability. first step proposed method is suppression. highlighted pixels are unified and then erosion dilation operations based on large template performed. Using background image only, which filled light, cleaner obtained subtracting from image. second...
The star sensor, while delivering superior accuracy in spacecraft attitude measurement, is susceptible to disturbances such as high-dynamic motion, stray light, and environmental factors. These disruptions can lead a substantial decline or even abnormal output, risking disorientation mission failure. To address this, we propose an optimization-based tightly-coupled scheme, augmenting under dynamic conditions fortifying resilience situations like lost-in-space. Our approach involves...
To enhance the dynamic performance and stability of spacecraft attitude measurement, a commonly adopted approach is to integrate star sensor with an inertial gyroscope. While integrated system offers benefits in high-precision high-dynamic scenarios, it also introduces errors extrinsic parameters camera gyroscope, directly contributing increased fixed error determination. Hence, real-time correction becomes crucial for enhancing accuracy estimation. However, deep coupling relationship exists...
Lunar in situ resource utilization is a core goal lunar exploration, with accurate rock pose estimation being essential. To address the challenges posed by lack of texture features and extreme lighting conditions, this study proposes Simulation-YOLO-Hourglass-Transformer (SYHT) method. The method enhances accuracy robustness complex environments, demonstrating strong adaptability excellent performance, particularly conditions scarce texture. This approach provides valuable insights for...
Abstract Star sensors usually have a fixed exposure time to guarantee detection of adequate navigation stars. In high dynamic environment, star images suffer from degradation due spacecraft movement, which will severely affects both centroid extraction and attitude accuracy. This paper presents an algorithm for the restoration motion-blurred images. The employs gyroscope assistance consists two steps: preprocessing image restoration. step, angular velocity predicts motion trajectory,...