• Aucun résultat trouvé

Low-Earth orbit

Using VR to Improve the Performance of Low-Earth Orbit Space Robot Operations

Using VR to Improve the Performance of Low-Earth Orbit Space Robot Operations

... 3. Sheridan, T.B. (1992). Telerobotics, automation, and human supervisory control. Cambridge, MA: MIT Press. 4. Lapointe, J.F., Dupuis, E., Hartman, L., et al. (2002). An analysis of low-earth orbit ...

6

Vision-based navigation in low earth orbit

Vision-based navigation in low earth orbit

... ABSTRACT This paper presents and compares two vision-based navigation methods for tracking space debris in a low Earth orbit environment. This work is part of the RemoveDEBRIS 1 project. The ...

9

An Analysis of Low-Earth Orbit Space Operations

An Analysis of Low-Earth Orbit Space Operations

... The main results of this study indicate that the performance and safety of current low-earth orbit space manipulator operations, could be improved by working on the control interface, a[r] ...

7

On the performance of UNB for Machine-To-Machine Low Earth Orbit (LEO) satellite communications

On the performance of UNB for Machine-To-Machine Low Earth Orbit (LEO) satellite communications

... KEYWORDS Aloha, doppler effect, IoT, M2M, satellite, UNB 1 INTRODUCTION Machine-to-machine (M2M) 1,2 covers communications between devices that do not require direct human intervention. Although they have long existed, ...

17

A 3U cubesat to investigate erbium doped fiber degradation at low earth orbit

A 3U cubesat to investigate erbium doped fiber degradation at low earth orbit

... Since the deployment of the fiber optic telecommunication network in 90’s, especially transatlantic link, the erbium doped fiber amplifier (EDFA) became a key device for optical repeater-regenerator [1]. This device has ...

4

Capacity provisioning, failure recovery and throughput analysis for low earth orbit satellite constellations

Capacity provisioning, failure recovery and throughput analysis for low earth orbit satellite constellations

... or network congestion problems can be recovered easily by routing traÆc through a satellite channel. For these reasons, here we investigate a future generation of satellite networks that are based on a constellation of ...

87

Synergy between Low Earth Orbit (LEO)—MODIS and Geostationary Earth Orbit (GEO)—GOES Sensors for Sargassum Monitoring in the Atlantic Ocean

Synergy between Low Earth Orbit (LEO)—MODIS and Geostationary Earth Orbit (GEO)—GOES Sensors for Sargassum Monitoring in the Atlantic Ocean

... of low earth orbit observations, especially in tropical ...from Earth, namely GOES-16 (NASA/NOAA), which was primarily designed for meteorology applications, are analyzed to investigate the ...

17

A Delphi-Based Framework for systems architecting of in-orbit exploration infrastructure for human exploration beyond Low Earth Orbit

A Delphi-Based Framework for systems architecting of in-orbit exploration infrastructure for human exploration beyond Low Earth Orbit

... beyond Low Earth ...Near Earth Asteroid, consensus on this architecture is far from being reached by the community at large, with particular reference to exploration and policy ...

21

The cost of Jointness : insights from environmental monitoring systems in low Earth orbit

The cost of Jointness : insights from environmental monitoring systems in low Earth orbit

... for low light imagery also motivated a change to MODIS’s internal optical ...morning orbit, since controlling stray light within the instrument was best accomplished using a different aperture in this ...

351

Characterization of commercial step-down converter performance in the low Earth orbit radiation environment

Characterization of commercial step-down converter performance in the low Earth orbit radiation environment

... The high current state exhibits unexpected behavior as the efficiency increases for both sets of 4A and 8A devices. An explanation for this could be that the integrat[r] ...

95

CLOSeSat : Perigee-lowering techniques and preliminary design for a small optical imaging satellite operating in very low earth orbit

CLOSeSat : Perigee-lowering techniques and preliminary design for a small optical imaging satellite operating in very low earth orbit

... 4.2.5 Simulation E: Testing Optical Systems with Varying Orbits, Propulsion Systems, and Ground Resolution Requirements... 4.4 Optimal CLOSeSat System Design.[r] ...

126

The potential of a constellation of low earth orbit satellite imagers to monitor worldwide fossil fuel CO2emissions from large cities and point sources

The potential of a constellation of low earth orbit satellite imagers to monitor worldwide fossil fuel CO2emissions from large cities and point sources

... during 8:30–11:30 are constrained (Fig. 6 a, dark green dots), the emissions in these time windows sum up to less than 10% of the annual emissions. The inversion system extrapolates the information on the emissions in 3  ...

13

Climate-quality calibration for low earth-orbit microwave radiometry

Climate-quality calibration for low earth-orbit microwave radiometry

... an orbit, a climatology of the diurnal variation in the measured parameters could be compiled, which would reduce uncertainties in climate trends inferred from earlier microwave radiometers over past ...

9

FLUKA Calculation of the Neutron Albedo Encountered at Low Earth Orbits

FLUKA Calculation of the Neutron Albedo Encountered at Low Earth Orbits

... FLUKA, low earth orbit, ...at Low Earth Orbit (LEO) is degraded due to the neutron albedo produced in the Earth ...the Earth in order to dis- entangle better the ...

9

Impact of Delayed Acknowledgments on Transport Layer Performance over Low Orbit Constellations

Impact of Delayed Acknowledgments on Transport Layer Performance over Low Orbit Constellations

... Centre National d'Etudes Spatiales, 31400 Toulouse, France DOI: 10.2514/1.A34190 Satellite transmissions can suffer from high channel impairments, especially on the link between a satellite and a mobile end user. To cope ...

7

Computing an optimized trajectory between Earth and an EML2 halo orbit

Computing an optimized trajectory between Earth and an EML2 halo orbit

... The bibliographic research pointed out many possible strategies in order to access a halo orbit around EML 2 . We selected the most suitable among them, adapted to the requirements of each mission. A deep space ...

27

Homoclinic orbit to a center manifold

Homoclinic orbit to a center manifold

... 6, and that it has a homo lini orbit. Homo lini s for this kind of Lagrangian were rst studied v ariationally by Bolotin [5 ℄, and then by several authors (see e.g. [2℄ ,[25 ℄). These works have also been extended ...

35

Probabilistic data association: the orbit set

Probabilistic data association: the orbit set

... precise orbit determination during a single passage of the object over an observing ...one orbit that complies with the acquired data, as shown in ...the orbit set ...correct orbit associated ...

28

A watery Earth

A watery Earth

... the Earth and Moon are about ...on Earth, mainly in Australia and Northern Canada that are of similar ages to those on the Moon, but most of the rocks on Earth are ...the Earth is constantly ...

2

Characterization of on-orbit robotic assembly

Characterization of on-orbit robotic assembly

... Figure 1. ​ Concept of operations for a “locker” with robotic arm assembly, showing future rapid response time of ~hours, compared with current and traditional missions response times of several weeks There are four ...

114

Show all 3537 documents...

Sujets connexes