home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: sci.electronics
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!cs.utexas.edu!torn!utzoo!henry
- From: henry@zoo.toronto.edu (Henry Spencer)
- Subject: Re: imaging system
- Message-ID: <By38y6.BIu@zoo.toronto.edu>
- Date: Sat, 21 Nov 1992 22:54:04 GMT
- References: <8685@lee.SEAS.UCLA.EDU>
- Organization: U of Toronto Zoology
- Lines: 24
-
- In article <8685@lee.SEAS.UCLA.EDU> annette@boole.seas.ucla.edu (Annette K. Nasif) writes:
- >... I would like
- >to have a videocamera, but the people working on telemetry say that it would
- >be too difficult to transmit back that much information. I therefore need
- >to find some sort of camera, the lighter and smaller the better, that can
- >take a series of snap shots (at least 8 bit resolution) which can then
- >be transmitted and received on the ground...
-
- Ask around the local ham-radio community for people doing slow-scan TV work
- (the abbreviation is SSTV).
-
- Bear in mind that there's no magic way of cutting down the amount of data
- in an image. Even at not-particularly-high resolution, say 300x300, you
- are still talking about transmitting hundreds of thousands of bits per image.
- Even if you spend several seconds transmitting each image, that's still a
- fairly high data rate as radio transmission goes. Just how much data *can*
- your telemetry people handle? If they can't give you at least 100Kb/s or
- so, I think you're out of luck.
-
- You might also want to check the Frequently-Asked-Questions list in
- rec.models.rockets; people have done this kind of thing before.
- --
- MS-DOS is the OS/360 of the 1980s. | Henry Spencer @ U of Toronto Zoology
- -Hal W. Hardenbergh (1985)| henry@zoo.toronto.edu utzoo!henry
-