Part of the Data transmission glossary:

Telemetry is the wireless transmission and reception of measured quantities for the purpose of remotely monitoring environmental conditions or equipment parameters. The term is also used in reference to the signals containing such data.

Telemetry is used with satellite s, space probes, and mobile robot s. Telemetry is employed in manned spacecraft, such as the Space Shuttle and the International Space Station (ISS), to monitor the physical condition of astronauts and to ensure the maintenance of a proper working environment for them. Telemetry is also used with the Hubble Space Telescope (HST).

A telemetry transmitter consists of a set of measuring instruments, an encoder that translates instrument readings into analog or digital signals, a modulator, and a wireless transmitter with an antenna. A telemetry receiver consists of an antenna, a set of radio-frequency ( RF ) amplifiers, a demodulator, and recording devices. A computer can be used to process and store received information.

This was last updated in September 2005
Contributor(s): Neal Winters
Posted by: Margaret Rouse

Related Terms


  • jumbo frames

    - A jumbo frame is an Ethernet frame with a payload greater than the standard maximum transmission unit (MTU) of 1,500 bytes.  (

  • femtocell

    - A femtocell is a wireless access point that improves cellular reception inside a home or office building. The device, which resembles a wireless router, essentially acts as a VOIP repeater. (

  • silicon photonics

    - Silicon photonics is an evolving technology in which data is transferred among computer chips by optical rays. The technology uses lasers to transfer data into light pulses. (


  • Data transmission

    - Terms related to data transmission, including definitions about communication channels and words and phrases about point-to-point and point-to-multipoint data transfers.

  • Internet applications

    - This glossary contains terms related to Internet applications, including definitions about Software as a Service (SaaS) delivery models and words and phrases about web sites, e-commerce ...

Ask a Question. Find an Answer.Powered by

Ask An IT Question

Get answers from your peers on your most technical challenges

Ask Question
  • Is antivirus software dead?

    In reference to the statement, "Future antimalware software solutions will be based upon a distributed and multi-tiered deployment from the "cloud" to the endpoint". I dont see how this can ever c...

Tech TalkComment



    Contribute to the conversation

    All fields are required. Comments will appear at the bottom of the article.