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Wireless Video Transmission

Discussion in 'Robotics & Mechatronics' started by dknguyen, Jul 26, 2007.

  1. dknguyen

    dknguyen Well-Known Member

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    Does anyone know how the military transmits video signals over such long distances? I guess television stations do this all the time but they have massive towers.

    The thing is, all the long-range transmitters I see (like 40km ranges) are digital, but all the video transmitters I see are short-range analog (like 100 feet-2km or so). Maybe it is a radio band licensing issue, but how do they transmit wireless video over such long ranges? Analog? Digital? Satellite? What?

    ie. I want to have a image processing stuff on a robot but I want to do it on a computer at ranges that exceed what a regular analog wireless video transmitter can support.
     
  2. Nigel Goodwin

    Nigel Goodwin Super Moderator Most Helpful Member

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    Doesn't matter how they do it?, because you can't!.

    But basically high power (in an allocated band) or satellite (again, in an allocated band).
     
  3. dknguyen

    dknguyen Well-Known Member

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    I'm more curious as to whether it's more likely to be analog or digital. To see if it's worth trying to find something digital of the same range of a wireless analog system.
     
  4. dave

    Dave New Member

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  5. Nigel Goodwin

    Nigel Goodwin Super Moderator Most Helpful Member

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    Makes no difference really, but I would expect anything modern to probably be digital?. I don't think there are any digital video transmitters available for domestic use?, not even digital RF modulators - basically it's FAR too expensive.
     

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