Potential Digitization/Compression Techniques for Shuttle Video

Author

Habibi, Ali ; Batson, Bartus H.

Author_Institution

TRW Defense and Space Systems Group, Redondo Beach, CA

Volume

26

Issue

11

fYear

1978

fDate

11/1/1978 12:00:00 AM

Firstpage

1671

Lastpage

1682

Abstract

The Space Shuttle initially will be using a field-sequential color television system but it is possible that an NTSC color TV system may be used for future missions. In addition to downlink color TV transmission via analog FM links, the Shuttle will use a high resolution slow-scan monochrome system for uplink transmission of text and graphics information. This paper discusses the characteristics of the Shuttle video systems, and evaluates digitization and/or bandwidth compression techniques for the various links. The more attractive techniques for the downlink video are based on a two-dimensional DPCM encoder that utilizes temporal and spectral as well as the spatial correlation of the color TV imagery. An appropriate technique for distortion-free coding of the uplink system utilizes two-dimensional HCK codes.

Keywords

DPCM coding/decoding; Image coding; Space Shuttle; Space-vehicle communications; Bandwidth; Cameras; Costs; Digital TV; Downlink; Graphics; Image coding; Phase change materials; Signal processing algorithms; Video compression;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/TCOM.1978.1094014

Filename

1094014