An experiment on near real time JERS-1 image data transmission system using data compression and ISDN network

Abstract

JERS-1 (Japanese Earth resources satellite-1) carries an synthetic aperture radar (SAR) and optical sensors (OPS). The image data rate is very large with volumes of more than 100 MB. It is not practicable to deliver this data using public telephone lines at 9600 bit per second (bps). The authors used JPEG for data compression and INS64 for data transmission. JPEG compression algorithm is proposed as the standard color still image compression method by ISO and CCITT. It is a non-recursive compression. INS64 is one kind of ISDN (integrated services digital network). As most users think, it is important to check full scene data with a personal computer or small workstation. The JERS-1 image transmission system using data compression and ISDN network is developed. This paper describes the outline of this system and the test results of JERS-1 image data compression and on-line transmission. >