Geostationary Satellite Near-Miss Avoidance Using On-Board Monitoring

Performance on Geostationary Satellite Links - - Lessons Learned Using Acts

The ACTS system has provided the opportunity to closely study the operation of various data communications protocols at speeds of up to 1.536 Mbps (Megabits per second). We performed performance measurements using the TCP/IP protocol suite, particularly the application layer implementations of FTP. In a separate experiment we studied the SNA/SDLC protocol in Normal Response Mode. Our observatio...

Forest fire detection for near real-time monitoring using geostationary satellites

Wind Estimation from Geostationary-satellite Pictures

The motion of properly selected clouds derived from photographs taken by the geostationary Advanced Technology Satellites provides estimates of the wind a t cloud level. A large number of lowand high-cloud motions near rawin stations are compared to the balloon-derived winds to determine the levels at which these wind estimates might be used for map analyses and to assess their accuracy a t tho...

Performance study of end-to-end resource management in ATM geostationary satellite networks with on-board processing

Because of their large geographic coverage, inherent broadcast capabilities, and fast deployment features, network operators plan to use satellite-based networks to supplement existing wire-line and legacy networks to bring broadband and multimedia services to endusers. Satellites are multiple access systems with very limited transmission capacity compared to terrestrial network nodes. Therefor...

Satellite On-Board Image Coding using PIRANHA Systematic–DSP

The main requirements of satellite on-board processing are heavy constraints on volume/weight/power consumption, the need for computation power always growing and the necessity for an excellent reliability. In many applications, the main part of the computation power is spent in the front-end processing. That’s why the usual solution is an architecture based on ASICs often associated to a DSP. ...