Results 41 to 50 of about 62,879 (146)

Design and Ground Verification for Vision‑Based Relative Navigation Systems of Microsatellites

Transactions of Nanjing University of Aeronautics and Astronautics
This paper presents the design and ground verification for vision-based relative navigation systems of microsatellites， which offers a comprehensive hardware design solution and a robust experimental verification methodology for practical implementation ...
DU Ronghua, LIAO Wenhe, ZHANG Xiang
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Intercepting Higher-Speed Targets Using Generalized Relative Biased Proportional Navigation

Xibei Gongye Daxue Xuebao, 2019
To intercept a higher-speed target in the terminal guidance phase, this paper proposes a generalized relative biased proportional navigation (BPN) law. In order to enlarge the capture domain of the classical proportional navigation (PN) law and make full

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Proportional Navigation Guidance with Variable Navigation Ratio in terms of the angle of relative velocity with respect to Line-of-Sight and its Rate [PDF]

فصلنامه علوم و فناوری فضایی
In the present work, the performance of True Proportional Navigation (TPN) with different profiles for effective navigation ratio in terms of the relative velocity angle with respect to line-of-sight is investigated due to initial heading errors and ...
S. Hamid Jalali-Naini, Ali Arabian Arani
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USV/UUV Cooperative Navigation Algorithm Based on Moving Long Baseline and Navigation Error Correction

水下无人系统学报
Unmanned undersea vehicles(UUVs) undergo a cumulative increase of inertial navigation error caused by long-term cooperative movement. In order to reduce the relative navigation errors between unmanned surface vessels(USVs) and UUVs and improve the ...
Huifeng JIAO, Chen YE, Wenchu WANG, Zhaoyong MAO, Yintao WANG   +4 more
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GPS relative navigation in rendezvous operations

Electronics Letters, 1990
The possibility of obtaining excellent results in rendezvous operations is investigated. A model of the GPS receiver to beinstalled on board the chaser is proposed. It can give both the relative navigation data and absolute navigation data. The results of a computer simulation are also presented.
S. Cacopardi, L. Caporicci, S. Falzini, C. Soddu   +3 more
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Simulation of Navigation Receiver for Ultra-Small Satellite

Приборы и методы измерений, 2019
Currently, ultra-small satellite aresubjectstostringentrequirementsintermsoftheaccuracyof determining the position of the satellite in orbit, while the satellite is the subject to restrictions on mass, size and power consumption.
A. A. Spiridonov, D. V. Ushakov, V. A. Saechnikov   +2 more
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Comparison of Kalman Filters for Inertial Integrated Navigation

Sensors, 2019
The current research on integrated navigation is mainly focused on filtering or integrated navigation equipment. Studies systematically comparing and analyzing how to choose appropriate integrated filtering methods under different circumstances are ...
Mengde Zhang, Kailong Li, Baiqing Hu, Chunjian Meng   +3 more
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Adaptive UAV Navigation Method Based on AHRS

Sensors
To address the inaccuracy of the Constant Acceleration/Constant Velocity (CA/CV) model as the state equation in describing the relative motion state in UAV relative navigation, an adaptive UAV relative navigation method is proposed, which is based on the
Yin Lu, Zhipeng Li, Jun Xiong, Ke Lv
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Ultra-Low SWaP Relative Navigation

, 2020
UltraNavis a low size, weight, power, and cost (SWaP-C) compute-enabled camera system capable of implementing industry standard computer-vision algorithms such as object recognition and tracking, state-estimation, and relative navigation. This system simplifies advanced missions that require capabilities such as Terrain Relative Navigation (TRN ...
Redfield, Morgan, Owens, Chris, Horchler, Andrew   +2 more
openaire   +1 more source

Sequential Mixed Cost-Based Multi-Sensor and Relative Dynamics Robust Fusion for Spacecraft Relative Navigation

Remote Sensing
The non-redescending convex functions degrade the filtering robustness, whereas the redescending non-convex functions improve filtering robustness, but they tend to converge towards local minima.
Shoupeng Li, Weiwei Liu
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