Results 11 to 20 of about 635,631 (297)
RSOnet: An Image-Processing Framework for a Dual-Purpose Star Tracker as an Opportunistic Space Surveillance Sensor [PDF]
Sensors, 2022 A catalogue of over 22,000 objects in Earth’s orbit is currently maintained, and that number is expected to double within the next decade. Novel data collection regimes are needed to scale our ability to detect, track, classify and characterize resident ...
Siddharth Dave +2 more
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Universal Verification Platform and Star Simulator for Fast Star Tracker Design [PDF]
Sensors, 2021 Developing star trackers quickly is non-trivial. Achieving reproducible results and comparing different algorithms are also open problems. In this sense, this work proposes the use of synthetic star images (a simulated sky), allied with the standardized ...
Victor Hugo Schulz +8 more
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Dual-Layer Factor-Graph Optimization for Delayed Star-Tracker/IMU Fusion in Highly Dynamic Spacecraft Attitude Estimation [PDF]
SensorsAccurate attitude estimation for highly dynamic spacecraft relies on robust fusion of star-tracker and inertial measurements. However, asynchronous sensing, motion blur in star images, and delayed star-tracker outputs can significantly degrade estimation
Chao Zhang, Yanjun Yu, Huayi Li
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Star-Tracker Algorithm for Smartphones and Commercial Micro-Drones [PDF]
Sensors, 2020 This paper presents a star-tracking algorithm to determine the accurate global orientation of autonomous platforms such as nano satellites, U A V s, and micro-drones using commercial-off-the-shelf ( C O T S ) mobile devices such as ...
Revital Marbel +2 more
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A Heavy Flavor Tracker for STAR [PDF]
, 2005 We propose to construct a Heavy Flavor Tracker (HFT) for theSTAR experiment at RHIC. The HFT will bring new physics capabilities toSTAR and it will significantly enhance the physics capabilities of theSTAR detector at central rapidities. The HFT will ensure that STAR willbe able to take heavy flavor data at all luminosities attainablethroughout the ...
Xu, Z. +38 more
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Development Of Star Tracker For Satellite
, 2015 {"references": ["S.A. Dyatlov, R.V. Bessonov \"Survey of star trackers for satellites\" in\nthe Proc. of russian scientific conference \"Modern problems of attitude\ndetermination and navigation of spacecrafts\", Russia, Tarusa, 2008, pp.\n12 \u2013 31.", "\u041c.\u041c. Moldabekov, S.\u0410. Yelubayev, K.A. Alipbayev, T.M. Bopeyev,\nA.S.
S. Yelubayev +7 more
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Computing the Installation Error between Star Tracker and Fiber Optic Gyroscope [PDF]
علوم، فناوری و کاربردهای فضایی, 2023 Star tracker is one of the most important devices used on satellites for attitude determination. Since its output is discontinuous, it needs a complementary unit to cover its discontinuities.
Elham Kowsari, Hadi Makarem
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Remote Sensing, 2022 The rolling shutter effect decreases the accuracy of the attitude measurement of star trackers when they work in rolling shutter exposure mode, especially under dynamic conditions.
Zongqiang Fu +6 more
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On-Orbit Geometric Distortion Correction on Star Images through 2D Legendre Neural Network
Remote Sensing, 2022 The star tracker is a prerequisite device to realize high-precision attitude determination for a spacecraft. However, due to the errors in optical lens machining, optical path assembly, and temperature alternation, optical instruments suffer from some ...
Chenguang Shi +3 more
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Stratospheric temperature measurements from nanosatellite stellar occultation observations of refractive bending [PDF]
Atmospheric Measurement Techniques, 2023 Stellar occultation observations from space can probe the stratosphere and mesosphere at a fine vertical scale around the globe. Unlike other measurement techniques like radiosondes and aircraft, stellar occultation has the potential to observe the ...
D. L. McGuffin +8 more
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