Development of advanced anomaly detection and failure diagnosis technologies for spacecraft is a quite significant issue in the space industry, because the space environment is harsh, distant and uncertain. While several modern approaches based on qualitative reasoning, expert systems, and probabilistic reasoning have been developed recently for this purpose, any of them has a common difficulty...

The critical concern of satellite operations is to ensure the health and safety of satellites. The worst case in this perspective is probably the loss of a mission, but the more common interruption of satellite functionality can result in compromised mission objectives. All the data acquiring from the spacecraft are known as Telemetry (TM), which contains the wealth information related to the h...

PANSAT will be a low-Earth orbit, free-tumbling satellite providing digital, store-and-forward communication using spread spectrum modulation. The satellite structure is composed of aluminum in a spherical configuration with a diameter of about 19 inches. PANSAT can be launched from a Shuttle Get Away Special (GAS) canister, which provides a typical orbit of 480 km at 28.5o inclination. An aver...

The olfactory navigation hypothesis proposed to explain homing pigeon predicts that birds learn the association of wind directions and wind-borne odours at home, once displaced, determine home direction on basis local environmental release site. This was two kinds empirical observations: (i) pigeons develop navigational abilities only if exposed winds loft, (ii) anosmic displaced unfamiliar sit...

There exists a need within the Department of Defense (DoD) to provide a highly responsive and costeffective anomaly detection capability for satellite health monitoring. The solution must address current Battle Management Command and Control (BMC2) deficiencies. A soft-computing solution is robust in that it could be engineered to detect anomalies without requiring pre-set thresholds and thus e...

This paper advocates a new approach to satellite software design based on objectoriented framework technology and describes early results from a project for the European Space Agency (ESA) to design a software framework for satellite attitude and orbit control systems (AOCS). Frameworks are collections of components with pre-defined cooperations among them. They make architecture (as opposed to...

Many satellite anomalies manifest themselves slowly over time and go undetected until they reach critical and possibly unrecoverable status. Because modern satellite systems are relatively reliable, the ground controller must perform the almost impossible task of attending carefully over long periods of time to telemetry readouts which almost always indicate nominal operation, while maintaining...

The problem of pre-flight calculation the orbital parameters first nanosatellite Belarusian State University CubeBel-1 before launching from Jiuquan Satellite Launch Center in China has been solved. passes over ground station were predicted based on perturbed circular motion model. initial TLE file was generated and published Internet. This allowed dozens radio amateurs 5 continents successfull...

The total allotted bandwidth available for space-toearth data transmission is 20 MHz in S-band, 375 MHz in X-band and 1500 MHz in Ka-band for Indian Remote Sensing (IRS) Satellites. The band allotted to communication satellites for space to earth communication in GEO missions is C-band (3.7-4.2 GHz). In this band, a small portion is identified for telemetry (TM) data transmission to ground. The...