(1964). Comparison of Ground Tests and Orbital Launch Results for the Explorer IX and Explorer XIX Satellites. NASA TN D-2466, Washington (DC).Woerner, Charles V.; and Coffee, Claude W., Jr.: Comparison of Ground Tests and Orbital Launch Results f o r the Explorer M and Explorer XM ...
Following that, we develop a statistical method to estimate the total system throughput (sellable capacity), considering both the orbital dynamics of the space-segment and the variability in performance induced by atmospheric conditions both for the user and feeder links. Given that the location and...
LEO satellites offer a handful of notable characteristics, primarily due to their close proximity to Earth. Firstly, they have a high orbital speed, completing a rotation around the Earth in about 90 to 120 minutes, meaning that a network of LEO satellites is needed to provide continuous coverag...
As the space industry evolves towards more cost-effective solutions, the development of reusable launch vehicles has become a crucial focus for reducing la
several policy recommendations to address orbital debris concerns after analyzing the number of encounters between satellites and space debris. Finally, McLain [16] compared the two aforementioned systems against multiple geostationary, very-high-throughput satellites, and ...
This paper addresses the comparison of the Space Shuttle STS-101 and STS-106 Space Integrated GPS/INS (SIGI) Orbital Attitude Readiness (SOAR) flight experiments on-orbit performance with the performance from the same receiver on a Global Simulation Systems (GSS) GPSSG. The SOAR flight ...
1st example: the GPS and future global navigation satellite systems (GNSS) The first constellation of the global positioning system (GPS) was designed with a Walker pattern 24/3/2 inclined at 63 degrees and 20,000 km altitude (12 h orbital period). It then evolved successively into an 18 ...
“satellite-scale” the availability analyses carried out for UAV-based surveys52,53, whereby the surfacing rate of animals is captured in video or multiple overlapping still images, and availability estimated. Logistically, repeating this with satellite imagery may be more challenging, given orbital ...
The China space station has recently been launched with an orbital height about 400 km. It will demonstrate an optical atomic clock in coming years whose long-term stability is 8×10−188×10−18[44]. For a running time of 60 days, it can test tidal effects to the level of 10%, ...
Since its launch in November 2009, SMOS has been recording brightness temperatures at L-Band (1.4 GHz) with an average spatial resolution of 43 km. The SMOS SSM products are derived from the multi-angular and full-polarization brightness temperature observations, using multi-orbital retrieval ...