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Low bandwidth, image transmission amateur microsatellites

Alfred Mwambela-1993-01-01-Durham e-Theses (Durham University)

TL;DRAbstract

Some recent amateur packet satellites carry open access digital store- and-forward transponders which implement common communication protocols known as PACSAT PROTOCOL SUITE. These standard protocols have improved a "friendly" interaction of different users of packet satellites throughout the world, hence, making packet satellites a more realistic means of communication. Application developments using packet satellites have resulted in an interesting electronic-mail network for medical applications, the Health-Net, where medical professionals in developing countries exchange information with their counterparts. The introduction of a higher rate of data transmission at 9600 baud rate compared to the traditional 1200 baud rate has improved the performance of these satellites. However, this new rate demands some modifications to the existing standard radio receivers and transmitters widely used. In particular, in view of the fact that, digital image technology has transformed microcompute

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Some recent amateur packet satellites carry open access digital store- and-forward transponders which implement common communication protocols known as PACSAT PROTOCOL SUITE. These standard protocols have improved a "friendly" interaction of different users of packet satellites throughout the world, hence, making packet satellites a more realistic means of communication. Application developments using packet satellites have resulted in an interesting electronic-mail network for medical applications, the Health-Net, where medical professionals in developing countries exchange information with their counterparts. The introduction of a higher rate of data transmission at 9600 baud rate compared to the traditional 1200 baud rate has improved the performance of these satellites. However, this new rate demands some modifications to the existing standard radio receivers and transmitters widely used. In particular, in view of the fact that, digital image technology has transformed microcompute

Keywords

Computer scienceBaudJPEGTransmission (telecommunications)Image compressionCommunications satelliteData transmissionPacket radio

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