The Internet Engineering Task Force (IETF) is working on extending the traditional TCP/IP model for supporting multimedia and real-time applications on the Internet. Thus, new protocols have been developed such as the Resource Reservation Protocol (RSVP). At the same time, there has been a growing interest in using Low Earth Orbit (LEO) satellites. In the near future, when the Internet with mul...

Theory and simulation results have demonstrated that four, variable speed flywheels could potentially provide the energy storage and attitude control functions of existing batteries and control moment gyros on a satellite. Past modeling and control algorithms were based on the assumption of rigidity in the flywheel’s bearings and the satellite structure. This paper provides simulation results a...

Satellite scene classification is challenging because of the high variability inherent in satellite data. Although rapid progress in remote sensing techniques has been witnessed in recent years, the resolution of the available satellite images remains limited compared with the general images acquired using a common camera. On the other hand, a satellite image usually has a greater number of spe...

The paper presents frame and burst acquisition in a satellite communication network based on time division multiple access (TDMA) in which the transmissions may be carried on different transponders. A unique word pattern is used for the acquisition process. The search for the frame is aided by soft-decision of QPSK modulated signals in an additive white Gaussian channel. Results show that when ...

Current GPS technologies for satellite navigation are relatively costly, heavy, and utilize a high amount of power. This makes such systems difficult for small satellites to support. In this paper, we describe a lowcost, low-weight, low-power GPS navigation system to support smaller satellites. A key component of our solution involves our patented TIDGET-based receiver design, which takes a bri...

Real-time multimedia applications impose strict delay bounds and are sensitive to delay variations. Satellite link handover increases delay jitter and signaling overhead as well as the termination probability of ongoing connections. To satisfy the QoS requirements of multimedia applications, satellite routing protocols should consider link handovers and minimize their effect on the active conne...

Vehicle surveillance of a wide area allows us to learn much about the daily activities and traffic information. With the rapid development of remote sensing, satellite video has become an important data source for vehicle detection, which provides a broader field of surveillance. The achieved work generally focuses on aerial video with moderately-sized objects based on feature extraction. Howev...

Low earth orbit (LEO) satellite constellations could play an important role in future mobile communication networks due to their characteristics, such as global coverage and low propagation delays. However, because of the non-stationarity of the satellites, a call may be subjected to handovers, which can be cell or satellite handovers. Quite many techniques have been proposed in the literature ...

Low earth orbit (LEO) satellite systems gained considerable interest towards the end of the previous decade by virtue of some of the appealing features that are endowed with, such as low propagation delay and the ability to communicate with handheld terminals. However, after the limited commercial success of the first networks of this kind, future satellite networks are now conceived as complem...

Abstract—Image mining is a used to mining the images for the extraction of knowledge. Different types of satellite images contain earlier prediction of forecasting weather & their important information. Several works has been done on Satellite image mining, databases are used to store the images & query image technique is used to retrieve the images. The technique used Content Based Image Retri...