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3 results about "Remote sensing satellite" patented technology

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Multi-point imaging rapid maneuvering control method for low-orbit optical remote sensing satellite

ActiveCN112455726AIncrease profitReduce maneuvering timeCosmonautic vehiclesSpacecraft guiding apparatusInertial coordinate systemFlywheel

The invention discloses a multi-point imaging rapid maneuvering control method for a low-orbit optical remote sensing satellite, belongs to the technical field of aerospace, and aims to control the attitude of the satellite to an expected value in the shortest time under the condition that the reaction flywheel moment of the satellite and the angular momentum of the satellite are limited, so thatan optical load has an imaging state. The method comprises the following steps: carrying out kinematics and dynamics modeling on a low-orbit optical remote sensing satellite; carrying out satellite attitude planning; converting the attitude planning result from an orbit coordinate system to an inertial coordinate system; establishing a satellite error kinematics kinetic equation in combination with attitude planning information; dividing the attitude of the satellite into an inner loop and an outer loop, establishing a controller, and realizing multi-point imaging rapid maneuvering control ofthe low-orbit optical remote sensing satellite. The method has both attitude maneuver rapidity and high-precision attitude stability, in the attitude maneuver process, the satellite attitude can stably converge to the planned attitude, and the control method is simple in structure, easy to implement and capable of being applied to engineering practice.

Owner:CHANGGUANG SATELLITE TECH CO LTD

Low earth orbit satellite passive moon calibration opportunity calculation method and system

PendingCN112926208AEasy to calculateSimple scene creationDesign optimisation/simulationSpecial data processing applicationsRadiation modelRemote sensing satellite

The invention discloses a low earth orbit satellite passive moon calibration opportunity calculation method and system. The method comprises the following steps: establishing an STK simulation scene; constructing three vectors in the STK simulation scene, wherein the first vector is a cold air view field starting vector, the second vector is a cold air ending vector, and the third vector is a vector from a satellite body to the moon; obtaining and outputting real-time angle values of an included angle alpha 1, an included angle alpha 2 and an included angle theta 3 in real time, wherein the included angle alpha 1 is the included angle between the first vector and the third vector, the included angle alpha 2 is the included angle between the second vector and the third vector, and the included angle theta 3 is the included angle between the first vector and the second vector; and according to the real-time angle values of the included angle alpha 1, the included angle alpha 2 and the included angle alpha 3, determining the relationship among the included angle alpha 1, the included angle alpha 2 and the included angle theta 3, and determining the moon calibration opportunity. According to the method, parameters such as lunar calibration opportunity are analyzed, and data support is provided for long-term monitoring of the stability of a remote sensing satellite detector and subsequent establishment of a Chinese lunar radiation model.

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Owner:AEROSPACE DONGFANGHONG SATELLITE

Micro-nano satellite cluster intelligent sensing method based on block chain and application thereof

ActiveCN113836552ANew systemArchitecture securityCharacter and pattern recognitionDigital data protectionEngineeringNano satellite

The invention discloses a micro-nano satellite cluster intelligent sensing method based on a block chain and an application thereof. The method comprises the following steps: performing a micro-nano satellite cluster remote sensing information security consensus step; performing an event/target active sensing step of micro-nano satellite cluster remote sensing; and performing a cognitive intelligent synthesis step of micro-nano satellite cluster remote sensing. The problems of information interaction and task collaboration in the remote sensing satellite joint application process are solved, the decentration and cognitive integration capabilities are achieved, and the security of a satellite cluster and the credibility of information can be guaranteed; the information sharing and transmission mode of a traditional satellite communication network is changed, safe sharing and application of remote sensing task information are achieved, and the anti-interference and anti-damage capacity of a satellite cluster is improved; scene self-adaptive perception, target autonomous detection and task autonomous planning of the star cluster under weak information support are realized, dependence of the star cluster on external control information is reduced, and timeliness and pertinence of a remote sensing task are improved.

Micro-nano satellite cluster intelligent sensing method based on block chain and application thereof

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Owner:NO 63921 UNIT OF PLA

3 results about "Remote sensing satellite" patented technology

Multi-point imaging rapid maneuvering control method for low-orbit optical remote sensing satellite

Low earth orbit satellite passive moon calibration opportunity calculation method and system

Micro-nano satellite cluster intelligent sensing method based on block chain and application thereof

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