摘要:
Zu multiplen, agilen und autonomen Landungen über einem Kleinkörper (A) oder Mond ausgebildetes Erkundungsfahrzeug (100) bereitgestellt. Das Erkundungsfahrzeug (100) umfasst eine Erfassungseinheit (140), eine Verarbeitungseinheit (150), eine Steuereinheit (160) und eine Antriebseinheit (170). Die Erfassungseinheit (140) ist dazu ausgebildet, zumindest eine Umgebung vor dem Erkundungsfahrzeug (100), in Richtung einer Trajektorie des Erkundungsfahrzeugs (100) über einer Oberfläche des Kleinkörpers (A) oder Mondes, zu erfassen. Die Erfassungseinheit (140) ist ferner dazu ausgebildet, auf der erfassten Umgebung basierte Umgebungsdaten bereitzustellen. Die Verarbeitungseinheit (150) ist dazu ausgebildet, basierend auf den bereitgestellten Umgebungsdaten, die Trajektorie zu aktualisieren. Die Steuereinheit (160) wirkt mit der Antriebseinheit (170) zusammen, um das Erkundungsfahrzeug (100) entsprechend der aktualisierten Trajektorie zu bewegen.
摘要:
A constellation of satellites may include a plurality of satellites in each of two or more different orbits. Satellites in a given orbit may operate in pairs, flying in tandem, one satellite leading, the other trailing closely behind, to be positioned to image the same target(s) of interest with substantially the same orientation (geographical coincident) at substantially the same time (temporally coincident). The first satellite may acquire SAR data, determine a location of a target of interest, assess cloud cover, and based on an extent of cloud cover, can acquire additional SAR data or cause the second satellite to capture optical imaging data (e.g., cross-cueing). Selection of orbits can provide a relatively high revisit rate may be obtained, allowing frequent opportunities to image given locations on a planet (e.g., Earth). One or more ground stations communicate with the constellation of satellites, and inter-satellite communications may be employed.
摘要:
본 발명에 따른 CSM기반 충돌위험 분석 시스템은 우주공간을 움직이는 우주파편, 사용자가 운용하는 사용자 인공위성, 우주파편 감시 위성과 레이더 또는 감시 광학카메라를 통해 수집한 정보를 수신하여 사용자 인공위성과 우주파편의 궤도정보 및 공분산 정보를 산출하는 합동우주전략부 서버, 합동우주전략부 서버가 산출한 궤도정보 및 공분산 정보를 가지고 인공위성과 우주파편 간의 충돌위험을 분석하는 충돌위험 분석 서버를 포함하여, 전 지구적인 우주감시 네트워크를 운영하면서 인공위성과 우주파편 사이의 충돌위험을 알려주는 CSM (Conjunction Summary Message)를 기반으로 하여 인공위성과 우주파편 간의 충돌예측 정확도를 향상시킬 수 있는 효과가 있으며, 운용자로 하여금 우주파편의 정밀 궤도결정 및 분석, 최적화된 충돌회피기동계획 수립 작업을 함에 있어 효과적인 사용자 인터페이스 및 시스템 구성을 통해 총 소요 시간을 크게 절감시키는 효과가 있다.
摘要:
A method and apparatus are presented for providing a compact extended ephemeris package for GNSS processing. An extended ephemeris service provides orbit trajectories and clock corrections which are predicted into the future for navigation satellites. The extended ephemeris package format used allows the ephemeris information to be sent quickly and efficiently, even when using a low bandwidth communication network. Client GNSS receiver devices obtain the extended ephemeris package and extract the satellite ephemeris information for later use. This allows a client device to operate for many days or weeks without needing to decode or receive new satellite ephemeris information.
摘要:
Micro satellite is disclosed with foldable solar panels that may be winded around the body of the micro satellite so that the growth in outer dimensions of the satellite is no more than 10-20 mm along each one of the length, width and height of the microsatellite so that the micro satellite may be launched in an auxiliary payload volume of a launcher. The foldable solar panels may be deployed to employ area that exceeds 9 times the product of the length by the width of the satellite and 6 times the product of the height by the length. The solar power produced by the solar panel and their light weight enable carrying of cargo that is at least 0.6 of the of the total mass of the satellites.
摘要:
Systems and methods are provided for scheduling one or more objects having pair-wise and cumulative constraints. The systems and methods presented can utilize a directed acyclic graph to increase or maximize a utilization function. Violation of cumulative constraints can be identified at the moment of constraint violation such that events resulting in constraint violations can be removed from the schedule while the schedule is being determined. By removing the events triggering constraint violations at the point of constraint violation, the systems and methods provided can determine optimal or near-optimal schedules in a relatively quick and efficient manner as compared to systems and methods that check for violations of cumulative constraints after determining a schedule. The objects can comprise satellites in a constellation of satellites. In some implementations, the satellites are imaging satellites, and the systems and methods for scheduling can use crowd-sourced data to determine events of interest for acquisition of images.
摘要:
A method of solar occultation, and in particular solar coronagraphy, employing a spacecraft 200 is disclosed. The spacecraft is controlled to achieve a position within a target zone relative to a celestial body, such as the Moon, such that the celestial body occults the Sun, allowing observations of the Sun or the space around the Sun, and in particular the Sun's corona, to be made from the spacecraft. The spacecraft has an orbit 40 around the Earth in a plane S, which like the Moon's orbit 20 in plane M, is inclined relative to the ecliptic plane E. Once inside the target zone, the spacecraft's orbit is controlled such that it remains in the target zone for longer than it would otherwise. This is achieved through the orbit within the target zone being at least partly non-Keplerian, when the orbit is under the influence of spacecraft translational thrust for example. The invention also extends to a method of controlling a spacecraft, to a spacecraft, and to a solar coronagraph comprising a spacecraft and a celestial body.
摘要:
A method comprises removing space debris (110) having a relatively low ballistic coefficient by hastening orbital decay of the debris. A transient gaseous cloud (120) is created at an altitude of at least 100 km above Earth (E). The cloud has a density sufficient to slow the debris so the debris falls into Earth's atmosphere.