On the long-period evolution of the sun-synchronous orbits

Kuznetsov, E. D.; Jasim, Abed T.

doi:10.1134/s0038094616030059

Cited by 3 publications

(1 citation statement)

References 2 publications

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“…For example, 'EROS-B' has a swath width of 7 km at Nadir from 510 km, with a spatial native resolution of 70 cm in the panchromatic band and the upcoming 'EROS-C' satellite will have a swath width of 12.5 km at Nadir, with a spatial native resolution of 40 cm in the panchromatic band and 80 cm in RGB. LEO Satellites have the advantage of being able to cover vast areas [11] with high spatial resolution and provide imagery without the problems of remote sensing systems, such as aircraft or unmanned aerial vehicles (UAV), which must be refueled and cannot easily cross international borders [12].…”

Section: Introductionmentioning

confidence: 99%

SNAP TASKING 'Snap Tasking' is the ability to upload an ad hoc requirement for immediate imaging by a satellite.

Tali

2018

2018 SpaceOps Conference

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A practical illustration for satellite imagery application can be for example:Resource finding and management, such as oil and gas: Remote monitoring of areas suitable for resource extraction, monitoring of facilities and transport movements [3]-[4]. Maritime intelligence and resource protection: Marine areas are vast and difficult to govern and police. In this realm there are multiple applications, such as detection of oil spills (and finding the culprits with correlation with AIS history of polluting vessels) [5]-[6], pirate vessel detection, prevention of smuggling or illegal fishing, and identification of non-compliant vessels [7]. Detection of military systems such as radar and rocket launchers [8] etc.Considering remote sensing satellite attributes and limitations the conflict between spatial and temporal resolution and coverage is obvious [9]. Put in a mission-oriented context the spatial and temporal requirements can be translated into the following satellite mission objectives:

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Section: Introductionmentioning

confidence: 99%

SNAP TASKING 'Snap Tasking' is the ability to upload an ad hoc requirement for immediate imaging by a satellite.

Tali

2018

2018 SpaceOps Conference

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WITHDRAWN: The effect of sun attraction on Sun-Synchronous satellites orbits

Ajaj

Jasim

Ameen

et al. 2021

Materials Today: Proceedings

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Design of Artificial Sun-Synchronous Orbits with Main Zonal Harmonics and Solar Radiation Pressure Using Continuous Low-Thrust Control Strategies

et al. 2019

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Artificial sun-synchronous orbits are suitable for remote sensing satellites and useful in giving accurate surface mapping. To design such orbits accurately with arbitrary orbital elements, three control strategies are provided with the consideration of main zonal harmonics up to J4 and solar radiation pressure (SRP). In this paper, the continuous variable low-thrust control is used as a way to achieve these artificial orbits and given by electric propulsions rather than chemical engines to enlarge lifespan of the spacecraft. The normal continuous low-thrust control is used to illustrate the control strategies. Furthermore, formulas for refinement of normal control thrusts are applied to overcome errors due to approximations. The results of the simulation show that the control strategies explained in this paper can realize sun-synchronous orbits with arbitrary orbital parameters without side effects and the effect of solar radiation pressure is very small relative to main zonal harmonics. A new technique is suggested, ASSOT-3, to minimize fuel consumption within one orbital period more than others. This technique is based on computing the root mean square of the rate of ascending node longitude instead of the average.

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On the long-period evolution of the sun-synchronous orbits

Cited by 3 publications

References 2 publications

SNAP TASKING 'Snap Tasking' is the ability to upload an ad hoc requirement for immediate imaging by a satellite.

SNAP TASKING 'Snap Tasking' is the ability to upload an ad hoc requirement for immediate imaging by a satellite.

WITHDRAWN: The effect of sun attraction on Sun-Synchronous satellites orbits

Design of Artificial Sun-Synchronous Orbits with Main Zonal Harmonics and Solar Radiation Pressure Using Continuous Low-Thrust Control Strategies

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