enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Over-the-horizon radar - Wikipedia

   en.wikipedia.org/wiki/Over-the-horizon_radar

   Over-the-horizon radar (OTH), sometimes called beyond the horizon radar (BTH), is a type of radar system with the ability to detect targets at very long ranges, typically hundreds to thousands of kilometres, beyond the radar horizon, which is the distance limit for ordinary radar. Several OTH radar systems were deployed starting in the 1950s ...

3. Microwave - Wikipedia

   en.wikipedia.org/wiki/Microwave

   Wireless LAN protocols, such as Bluetooth and the IEEE 802.11 specifications used for Wi-Fi, also use microwaves in the 2.4 GHz ISM band, although 802.11a uses ISM band and U-NII frequencies in the 5 GHz range. Licensed long-range (up to about 25 km) Wireless Internet Access services have been used for almost a decade in many countries in the 3 ...

4. List of radars - Wikipedia

   en.wikipedia.org/wiki/List_of_radars

   AN/TPS-1 Long range search radar; AN/TPS-22 Long range search radar; AN/TPS-25 Ground Surveillance Radar (replaced by AN/TPS-58) AN/TPS-32 Long range search radar; AN/TPS-34 Long range search radar; AN/TPS-37 height-finder radar; AN/TPS-39 Intrusion Detection, missile sites [67] AN/TPS-43 Mobile Tactical 3D Radar; AN/TPS-43E Mobile Tactical 3D ...

5. Radar - Wikipedia

   en.wikipedia.org/wiki/Radar

   Radar is a system that uses radio waves to determine the distance (), direction (azimuth and elevation angles), and radial velocity of objects relative to the site. It is a radiodetermination method [1] used to detect and track aircraft, ships, spacecraft, guided missiles, motor vehicles, map weather formations, and terrain.

6. Early-warning radar - Wikipedia

   en.wikipedia.org/wiki/Early-warning_radar

   An early-warning radar is any radar system used primarily for the long-range detection of its targets, i.e., allowing defences to be alerted as early as possible before the intruder reaches its target, giving the air defences the maximum time in which to operate.

7. History of radar - Wikipedia

   en.wikipedia.org/wiki/History_of_radar

   For this, there was a long-range Perimeter Acquisition Radar (PAR) and a shorter-range, more precise Missile Site Radar (MSR). [82] The PAR was housed in a 128-foot (39 m)-high nuclear-hardened building with one face sloping 25 degrees facing north. This contained 6,888 antenna elements separated in transmitting and receiving phased arrays.

8. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

9. Ground Master 400 - Wikipedia

   en.wikipedia.org/wiki/Ground_Master_400

   The Ground Master 400 (GM400) is a mobile long range radar system manufactured by Thales (formerly by Thales-Raytheon Systems). [1] GM400 is a fully digital active electronically scanned array long-range air defense 3D radar, offering detection from very high to very low altitudes.