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7370566 |
Complimentary retrograde/prograde satellite constellation
A method for sensing and monitoring ICBM threats using a constellation of earth orbiting satellites. The method includes arranging a first and a second plurality of threat sensing satellites in...
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7313362 |
High altitude airborne craft used as radio relay and method for placing said airborne craft on station
The present invention relates to an aircraft and to a method of getting the aircraft onto station. According to the invention, said aircraft ( 1 ) includes propulsion means ( 2 ) capable only of...
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7302317 |
System and method to enhance attitude estimation for transfer orbit maneuver
A system and method to enhance attitude estimation for transfer orbit maneuvers of a spinning satellite includes a transfer orbit earth sensor that can receive and convert an infrared radiance to...
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7270299 |
Space based change detection using common ground track constellations
A new approach for designing satellite constellations whereby each satellite follows a common ground track is being proposed for performing high-precision change detection imagery for long periods...
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7255308 |
Solar dominated satellite constellations capable of having repeating common ground tracks
A new method of constellation design based on combining repeating ground tracks with common ground tracks and/or sun-synchronous orbits is used for performing high-precision change detection...
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7228231 |
Multiple stayout zones for ground-based bright object exclusion
A vehicle ( 12 ) including a control system ( 18 ) is used for controlling vehicle attitude or angular velocity ( 38 ). The processor ( 24 ) is coupled to a star sensor or tracker ( 22 ) and a...
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7219858 |
Method for deploying multiple spacecraft
A method for deploying multiple spacecraft is disclosed. The method can be used in a situation where a first celestial body is being orbited by a second celestial body. The spacecraft are loaded...
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7198230 |
Method and system for maximizing satellite constellation coverage
A method and system for maximizing satellite coverage at predetermined local times for a set of predetermined geographic location includes a processor operative to determine a period of rotation...
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7051980 |
Efficient orbit sparing system for space vehicle constellations
A sparing system for space vehicle constellations. A plurality of space vehicles arranged in at least one mission orbit plane. The number of space vehicles is at least one greater than a minimum...
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6892986 |
Satellite constellations using nodally-adjusted repeating ground track orbits
A satellite system and method is disclosed. A plurality of satellites includes one or more satellites in circular orbits and at least one satellite of the plurality of satellites in an elliptcal...
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6866231 |
Method for limiting interference between satellite communications systems
Boeing achieves satellite diversity by having a large discrimination angle for a MEO constellation of communications satellites to limit interference in the Ku-band with GSO communications systems....
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6851651 |
Constellation of spacecraft, and broadcasting method using said constellation
In general, a constellation of spacecraft is used to broadcast to a particular region with high angles of view in order to reduce blockage or shadowing. A constellation of a plurality of spacecraft...
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6766987 |
Satellite system and method of deploying same
A satellite communication system has a first deployment of a plurality of satellites deployed in a medium earth orbit and two later deployments of a plurality of satellites deployed in the medium...
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6726152 |
Satellite communications system
Boeing achieves satellite diversity by having a large discrimination angle for a MEO constellation of communications satellites to limit interference in the Ku-band with GSO communications systems....
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6695260 |
Virtually geostationary satellite array
An array of satellites virtual forming a geosynchronous space. Communication with the satellites is only carried out during an active arc near the apogee portion. During other points of the...
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6695259 |
Communication system, communication receiving device and communication terminal in the system
A communication line not affected by artificial structures and plants is established between mobile objects and stationary stations surrounded with skyscrapers, and economical artificial satellite...
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6677884 |
Satellite configuration for interferometric and/or tomographic remote sensing by means of synthetic aperture radar (SAR)
For interferometric and/or tomographic remote sensing by means of synthetic aperture radar (SAR) one to N receiver satellites and/or transmitter satellites and/or transceiver satellites with a...
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6634600 |
Satellite constellation for measuring atmospheric wind speeds using doppler lidar
A constellation of satellites comprising at least two satellites in the same orbit is used to measure atmospheric wind speeds by means of a spatial wind lidar; each satellite carries a Doppler...
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6600921 |
Dual coverage grid method
A method and apparatus for producing contiguous spot beam communications coverage on the Earth's surface are disclosed. The apparatus comprises two contiguous beam patterns. The first contiguous...
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6597989 |
Non-geostationary orbit satellite constellation for continuous coverage of northern latitudes
A non-geostationary low earth orbit satellite constellation using elliptical orbits with apogees in the Northern Hemisphere to provide continuous coverage over the Continental United States of...
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6581882 |
Low-thrust cryogenic propulsion module
The cryogenic propulsion module comprises a main cryogenic thruster ( 10 ), two attitude-controlling secondary thrusters ( 21, 22 ), tanks ( 31, 32, 33, 34 ) for feeding cryogenic propellants, a...
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6564053 |
Efficient high latitude service area satellite mobile broadcasting systems
Satellite audio broadcasting systems include orbital constellations for providing high elevation angle coverage of audio broadcast signals from the constellation's satellites to fixed and mobile...
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6556808 |
Fixed ground track satellite constellation and user terminal
A satellite communication system includes a constellation of non-geostationary orbiting satellites following a fixed ground track on the earth, and ground terminals having substantially continuous...
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6502790 |
Inclined non-uniform planar spaced constellation of satellites
A non-uniform planar spaced constellation of satellites for providing continuous global or regional coverage including at least one pair of orbital planes having inclined co-rotating orbits, and at...
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6499698 |
Satellite, satellite control method and satellite communication system
An information providing method and apparatus for providing information to a moving body via an artificial satellite. Information for selecting a desired information and position information of the...
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6487476 |
Redundant satellite system
A diversity satellite system using a trailer satellite concept. The main satellite is placed into orbit and the trailer satellite, typically a much smaller satellite, is in orbit with the main...
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6457678 |
Constellation of elliptical orbit satellites with line of apsides lying in or near the equatorial plane
An apogee pointed to the sun system which uses an elliptical orbit that is tiled in a way that exploits asymmetry in the Van Allen belts.
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6389336 |
Overhead system of inclined eccentric geosynchronous orbiting satellites
A system of inclined geosynchronous satellite orbits has a service area defined on a surface of the earth. The service area has elevation angles greater than a predetermined minimum elevation angle...
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6267329 |
Medium earth orbit communications satellite system
A Medium Earth Orbit (MEO) satellite constellation comprising two satellite subconstellations. Each of the two satellite subconstellations comprises three cross-linked satellites. The cross-linked...
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6264143 |
Radar interferometry device
The invention relates to radar interferometry apparatus comprising at least one emitter satellite (E) and a constellation of receiver satellites (S). The receivers are accurately synchronous and...
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6241193 |
Geostationary satellite stabilized along three axes with improved temperature control
A geostationary satellite stabilized in its an orbit includes at least one first face, chosen from among an east face, which is transverse to orbit, and an earth face, which is permanently directed...
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6241192 |
Earth observation method, and system and observation satellite, operating ground system and program for the same
An earth observation system capable of observing the earth globally and uniformly in a steady observation operation mode while observing a given district on the earth in a high-frequency...
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6182927 |
Medium earth orbit augmentation of a global positioning system for global navigation
A satellite navigation system and method for improving overall navigation accuracy when used in conjunction with the existing Global Positioning System. At least twelve satellites reside in a...
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6160994 |
Interactive fixed and mobile satellite network
A communications system includes at least one low earth orbit first satellite (10), at least one second satellite (11) in other than a low earth orbit, and a ground segment (12) that includes a...
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6135389 |
Subterranean target steering strategy
A method for steering the payload beam of a satellite in a non-geostationary orbit toward an intended service area having known geographical dimensions in order to obtain improved pointing...
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6126116 |
Coordinatable system of inclined eccentric geosynchronous orbits
A coordinatable system of geosynchronous ("24 hour"), inclined, and slightly elliptic satellite orbits, increases available satellite orbital capacity and enables spectrum re-use by forming...
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6122596 |
Non-geostationary orbit satelite constellation for continuous preferential coverage of northern latitudes
A non-geostationary low earth orbit satellite constellation using elliptical orbits with apogees in the Northern Hemisphere to provide continuous coverage over the Continental United States of...
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6082677 |
Satellite orbiting toward west in the equatorial plane and meteorological satellite system using the satellite
Achieved herein is a satellite capable of readily obtaining in a short time span a continuous image of the whole earth by a single unit of the satellite alone, the westward equatorial satellite...
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6050525 |
Asymmetric open rosette constellations
An asymmetric open rosette constellation has multiple inclined orbit planes distributed around 360° with the satellites asymmetrically spaced in the orbit planes. The satellites populate only a...
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6032902 |
Constellation of non-geostationary satellites providing permanent coverage
The invention relates to a communications and/or navigation system based on a constellation of non-geostationary satellites in orbit around the terrestrial globe. The constellation has satellites...
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6029935 |
Method for adding a geostationary component to a non-geostationary satellite network
A method is disclosed for adding a geostationary component (201) to a low earth orbit satellite network. The method includes establishing a geostationary orbit for an administration satellite,...
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6019318 |
Coordinatable system of inclined geosynchronous satellite orbits
A coordinatable system of geosynchronous (24-hour), inclined, and slightly elliptical satellite orbits enables spectrum re-use by forming "highways" of moving "slots" in the latitudes above and...
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6007027 |
Method and apparatus for early service using phased satellite depolyment
A method (100) for providing continuous communication service from a partially populated satellite constellation includes deploying one or more phases of satellites to populate one or more sets of...
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5979832 |
Dual ring array of satellites
Array of satellites in a planetary gear arrangement. One ring is circular, and within the other ring, which is elliptical. The circular and elliptical rings overlap at a tangent point. At that...
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5971324 |
Multiple altitude satellite relay system and method
A multiple altitude satellite relay system is disclosed in which Medium Earth Orbit satellites are continuously linked with at least one geosynchronous satellite to provide uninterrupted relaying...
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5957409 |
Ellipitical satellite system which emulates the characteristics of geosychronous satellites
An elliptical satellite system which carries out communication. The satellite orbits a height above the earth less than that necessary for geosynchronous orbits. When the satellite is near the...
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5927652 |
System for observation of geostationary satellites, use of a system of this kind and corresponding observation methods
The invention concerns, in particular, a system of observation of geostationary satellites (10 1 -10 n ). In accordance with the invention, this system comprises at least one observation satellite...
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5911389 |
Wave based satellite constellation
A constellation (100) comprising a plurality of man-made satellites (1-27). The satellites (1-27) orbit a celestial body (110) along a plurality of orbits (120-128), which are located at a...
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5903837 |
Wireless telephone/satellite roaming method
A wireless telephone system capable of servicing a roaming wireless telephone user includes a satellite communications system consisting of one or more orbiting satellites, each carrying a database...
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5890679 |
Medium earth orbit communication satellite system
A Medium Earth Orbit (MEO) satellite constellation comprising two satellite subconstellations. Each of the two satellite subconstellations comprises three cross-linked satellites. The cross-linked...
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