This is a list of different types of radar.

Detection and search radars

Search radars scan great volumes of space with pulses of short radio waves. They typically scan the volume two to four times a minute. The waves are usually less than a meter long. Ships and planes are metal, and reflect radio waves. The radar measures the distance to the reflector by measuring the time of the roundtrip from emission of a pulse to reception, dividing this by two, and then multiplying by the speed of light. To be accepted, the received pulse has to lie within a period of time called the ''range gate''. The radar determines the direction because the short radio waves behave like a search light when emitted from the reflector of the radar set's antenna.

Search

* Early Warning (EW) Radar Radar Systems ** Ground Control Intercept (GCI) Radar ** Airborne Early Warning (AEW) ** Airborne ground surveillance (AGS) ** Over-the-Horizon (OTH) Radar *Target Acquisition (TA, TAR) Radar Systems ** Surface-to-Air Missile (SAM) Systems ** Anti-Aircraft Artillery (AAA) Systems *Surface Search (SS) Radar Systems **Surface Search Radar **Coastal Surveillance Radar **Harbour Surveillance Radar ** Antisubmarine Warfare (ASW) Radar * Height Finder (HF) Radar Systems *Gap Filler Radar Systems

Targeting radars

Targeting radars utilize the same principle but scan smaller volumes of space far more often, usually several times a second or more, while a search radar will scan a larger volume less frequently. Missile lock-on describes the scenario where a targeting radar has acquired a target, and the fire control can calculate a path for the missile to the target; in

semi-active radar homing Semi-active radar homing (SARH) is a common type of missile guidance system, perhaps the most common type for longer-range Air-to-air missile, air-to-air and surface-to-air missile systems. The name refers to the fact that the missile itself is ...

systems, this implies that the missile can "see" the target that the targeting radar is "illuminating". Some targeting radars have a range gate that can track a target, to eliminate clutter and

electronic countermeasure An electronic countermeasure (ECM) is an electrical or electronic device designed to trick or deceive radar, sonar, or other detection systems, like infrared (IR) or lasers. It may be used both offensively and defensively to deny targeting info ...

Missile guidance systems

* Air-to-Air Missile (AAM) * Air-to-Surface Missile (ASM) * Surface-to-air missile (SAM) Systems * Surface-to-Surface Missiles (SSM) Systems

Others

*Target Tracking (TT) Systems ** AAA Systems *Multi-Function Systems ** Fire Control (FC) Systems ***Acquisition Mode ***Semiautomatic Tracking Mode ***Manual Tracking Mode **Airborne Intercept (AI) Radars ***Search Mode ***TA Mode ***TT Mode ***Target Illumination (TI) Mode *** Missile Guidance (MG) Mode **

Active electronically scanned array An active electronically scanned array (AESA) is a type of phased array antenna, which is a computer-controlled array antenna in which the beam of radio waves can be electronically steered to point in different directions without moving the an ...

(AESA)

Battlefield and reconnaissance radar

*Battlefield Surveillance Systems ** Counter-battery radar **Battlefield Surveillance Radars **Tactical Radar Identification and Location System *Countermortar/Counterbattery Systems **Shell Tracking Radars *Air Mapping Systems ** Side looking airborne radar (SLAR) ** Synthetic Aperture Radar (SAR) ** Perimeter Surveillance Radar (PSR) ** Red Dawn Radar System * Ground Surveillance Radar * Man portable radar

Instrumentation radars

Instrumentation radars are used to test aircraft, missiles, rockets, and munitions on government and private test ranges. They provide Time, Space, Position, Information (TSPI) data both for real time and post processing analysis. Repurposed NASA and military radars * AN/FPS-16 * MPQ-33/39 *MPA-25 *FPS-134 * FPS-14 *TPQ-18 *FPQ-17 Commercial off-the-shelf (COTS) * Weibel MFTR series * Weibel MSL series * Weibel SL series Custom *AN/MPS-39 Multi-Object Tracking Radar (MOTR) *TAMTS *BAE Rule *ROTR *ROSA *ROSA II *COSIP *Dynetics MRS

Fuzes and triggers

Radar

proximity fuze A proximity fuze (or fuse) is a Fuze (munitions), fuze that detonates an Explosive material, explosive device automatically when the distance to the target becomes smaller than a predetermined value. Proximity fuzes are designed for targets such ...

s are attached to

anti-aircraft artillery Anti-aircraft warfare, counter-air or air defence forces is the battlespace response to aerial warfare, defined by NATO as "all measures designed to nullify or reduce the effectiveness of hostile air action".AAP-6 It includes surface based, ...

shells or other

explosive An explosive (or explosive material) is a reactive substance that contains a great amount of potential energy that can produce an explosion if released suddenly, usually accompanied by the production of light, heat, sound, and pressure. An expl ...

devices, and detonate the device when it approaches a large object. They use a small rapidly pulsing omnidirectional radar, usually with a powerful battery that has a long storage life, and a very short operational life. The fuzes used in anti-aircraft artillery have to be mechanically designed to accept fifty thousand ''g'', yet still be cheap enough to throw away.

Weather-sensing radar systems

Weather radars can resemble search radars. This radar uses radio waves along with horizontal, dual (horizontal and vertical), or circular polarization. The frequency selection of weather radar is a performance compromise between precipitation reflectivity and attenuation due to atmospheric water vapor. Some weather radars uses

doppler shift The Doppler effect or Doppler shift (or simply Doppler, when in context) is the change in frequency of a wave in relation to an observer who is moving relative to the wave source. It is named after the Austrian physicist Christian Doppler, who d ...

to measure wind speeds and dual-polarization for identification of types of precipitations. * Weather radar * Wind profilers *

Millimetre cloud radar Millimeter-wave cloud radars, also denominated cloud radars, are radar systems designed to monitor clouds with operating frequencies between 24 and 110 GHz (Table 1). Accordingly, their wavelengths range from 1 mm to 1.11 cm, about ...

CODAR Codar is a village in the Ponda ''taluka'' (sub-district) of Goa. Codar, also spelt as Kodar, is home to the Goa Government Agricultural Farm. Area, population According to the official 2011 Census, Codar in Ponda ''taluka'' has an area of 975.2 ...

Image:Sturmfront auf Doppler-Radar-Schirm.jpg, Storm front reflectivities on a weather radar screen (NOAA) Image:Wind_Profiler.jpg, Wind profiling radar

Navigational radars

Navigational radars resemble search radar, but use very short waves that reflect from earth and stone. They are common on commercial ships and long-distance commercial aircraft. Marine radars are used by ships for collision avoidance and navigation purposes. The frequency band of radar used on most ships is

X band The X band is the designation for a band of frequencies in the microwave radio region of the electromagnetic spectrum. In some cases, such as in communication engineering, the frequency range of the X band is rather indefinitely set at approxim ...

(9 GHz/3 cm), but

S band The S band is a designation by the Institute of Electrical and Electronics Engineers (IEEE) for a part of the microwave band of the electromagnetic spectrum covering frequencies from 2 to 4 gigahertz (GHz). Thus it crosses the convention ...

(3 GHz/10 cm) radar is also installed on most oceangoing ships to provide better detection of ships in rough sea and heavy rain condition. Vessel traffic services also use marine radars (X or S band) for tracking ARPA and provides collision avoidance or traffic regulation of ships in the surveillance area. General purpose radars are increasingly being substituted for pure navigational radars. These generally use navigational radar frequencies, but modulate the pulse so the receiver can determine the type of surface of the reflector. The best general-purpose radars distinguish the rain of heavy storms, as well as land and vehicles. Some can superimpose sonar and map data from

GPS The Global Positioning System (GPS), originally Navstar GPS, is a Radionavigation-satellite service, satellite-based radionavigation system owned by the United States government and operated by the United States Space Force. It is one of t ...

position.

Air Traffic Control and navigation

Air traffic control uses primary and secondary radars. Primary radars are a "classical" radar which reflects all kind of echoes, including aircraft and clouds. Secondary radar emits pulses and listens for special answer of digital data emitted by an Aircraft Transponder as an answer. Transponders emit different kind of data like a 4 octal ID (mode A), the onboard calculated altitude (mode C) or the Callsign (not the flight number) (mode S). Military use transponders to establish the nationality and intention of an aircraft, so that air defenses can identify possibly hostile radar returns. This military system is called IFF (

Identification Friend or Foe Identification, friend or foe (IFF) is an identification system designed for command and control. It uses a transponder that listens for an ''interrogation'' signal and then sends a ''response'' that identifies the broadcaster. IFF systems usual ...

). * Air Traffic Control (ATC) Radars * Secondary Surveillance Radar (SSR) (Airport Surveillance Radar) *Ground Control Approach (GCA) Radars * Precision Approach Radar (PAR) Systems * Distance Measuring Equipment (DME) * Radio Beacons * Radar Altimeter (RA) Systems * Terrain-Following Radar (TFR) Systems * Radar altimeters measure an aircraft's true height above ground.

Space and range instrumentation radar systems

*Space (SP) Tracking Systems *Range Instrumentation (RI) Systems *Video Relay/Downlink Systems * Space-based radar * Incoherent scatter

Mapping radars

Mapping radars are used to scan a large region for remote sensing and geography applications. They generally use synthetic aperture radar, which limits them to relatively static targets, normally terrain. Specific radar systems can sense a human behind walls. This is possible since the reflective characteristics of humans are generally more diverse than those of the materials typically used in construction. However, since humans reflect far less radar energy than metal does, these systems require sophisticated technology to isolate human targets and moreover to process any sort of detailed image. Through-the-wall radars can be made with Ultra Wideband impulse radar, micro-Doppler radar, and synthetic aperture radar (SAR).Through-the-wall radar
/ref> * Imaging radar *

3D radar 3-D, 3D, or 3d may refer to: Science, technology, and mathematics Relating to three-dimensionality * Three-dimensional space ** 3D computer graphics, computer graphics that use a three-dimensional representation of geometric data ** 3D film, a ...

Speed radar

* Radar gun, for traffic policing and as used in some sports

Radars for biological research

Radar range and wavelength can be adapted for different surveys of bird and migration and daily habits. They can have other uses too in the biological field. *
Insect radar
**Surveillance radar (mostly X and S band, i.e. primary ATC Radars) **Tracking radar (mostly X band, i.e. Fire Control Systems) *
Wearable radar
' and miniature radar systems are used as electric seeing aids for the visually impaired, as well as early warning collision detection and situational awareness.

Notes

{{Authority control Radar