Uttam is a solid-state

gallium arsenide Gallium arsenide (GaAs) is a III-V direct band gap semiconductor with a Zincblende (crystal structure), zinc blende crystal structure. Gallium arsenide is used in the manufacture of devices such as microwave frequency integrated circuits, monoli ...

(GaAs) based

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) radar under development by the

Electronics and Radar Development Establishment Electronics and Radar Development Establishment (LRDE) is a laboratory of the Defence Research & Development Organisation (DRDO), India. Located in C.V. Raman Nagar, Bengaluru, Karnataka, its primary function is research and development of rad ...

(LRDE), a laboratory of the Indian

Defence Research and Development Organisation The Defence Research and Development Organisation (DRDO) (IAST: ''Raksā Anūsandhān Evam Vikās Sangaṭhan'') is the premier agency under the Department of Defence Research and Development in Ministry of Defence of the Government of India ...

(DRDO). It is a

low probability of intercept radar A low-probability-of-intercept radar (LPIR) is a radar employing measures to avoid detection by passive radar detection equipment (such as a radar warning receiver (RWR), or electronic support receiver) while it is searching for a target or enga ...

intended to be installed on the HAL Tejas Mark 1A, HAL Tejas Mark 2 and

HAL TEDBF The HAL Twin Engine Deck Based Fighter (TEDBF) is a canard delta wing, twin-engine, carrier-based, multirole combat aircraft currently under development for the Indian Navy. The TEDBF is being designed and developed by the Aeronautical Develop ...

aircraft with plans to implement a larger and more powerful variant on-board India's 5th Generation fighter aircraft, the

HAL AMCA The Advanced Medium Combat Aircraft (AMCA) is an Indian programme to develop a fifth-generation stealth, multirole, air superiority fighter for the Indian Air Force and the Indian Navy which will also include sixth-generation technologies. ...

Description

It is a liquid cooled AESA radar featuring quad band modules that can be stacked to form a larger unit. This allows the manufacturer to scale the radar to be used in larger aircraft. There are plan to create a larger scalable design to be used in

India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...

's fifth-generation HAL AMCA jet fighter. The radar development began in 2012 and its full-scale model was displayed at the 2017

Aero India Aero India is a biennial air show and aviation exhibition held in Bengaluru, India at the Yelahanka Air Force Station. It is organised by the Defence Exhibition Organisation, Ministry of Defence. Organisers The Defence Ministry of India, Indi ...

air show and aviation exhibition. A fully functional AESA radar prototype was unveiled at Aero India 2019, the prototype was mounted inside the glass nose of a HAL Tejas prototype. As of 2021, three units were in various phases of testing,. The Uttam radar has completed 230 hours of airborne testing onboard two Tejas fighter jets (LSP2 and LSP3) and on an executive jet; presumed to be DRDO's

Dornier 228 The Dornier 228 is a twin-turboprop STOL utility aircraft, designed and first manufactured by Dornier GmbH (later DASA Dornier, Fairchild-Dornier) from 1981 until 1998. Two hundred and forty-five were built in Oberpfaffenhofen, Germany. In 19 ...

"Nabhratna" used as a flying test bed by LRDE. Once fully validated and certified, it is planned is to introduce the radar in later batches of Tejas Mark 1A aircraft. The Uttam radar will be used with DRDO's Unified

Electronic Warfare Electronic warfare (EW) is any action involving the use of the electromagnetic spectrum (EM spectrum) or directed energy to control the spectrum, attack an enemy, or impede enemy assaults. The purpose of electronic warfare is to deny the opponen ...

suite. During Aero India 2021, there was a licensing agreements for

technology transfer Technology transfer (TT), also called transfer of technology (TOT), is the process of transferring (disseminating) technology from the person or organization that owns or holds it to another person or organization, in an attempt to transform invent ...

from DRDO to

Hindustan Aeronautics Limited Hindustan Aeronautics Limited (HAL) is an Indian state-owned aerospace and defence (military), defence company, headquartered in Bangalore, India. Established on 23 December 1940, HAL is one of the oldest and largest aerospace and defence manuf ...

for manufacturing and integration of the Uttam in the Mark 1A variant of the HAL Tejas.

Indian Air Force Test Pilot School The Indian Air Force Test Pilot School is a unit of the Indian Air Force (IAF) that evaluates aircraft and systems for induction into user organisations. Most new aircraft types and major airborne systems must have ASTE's stamp of approval to b ...

will start final demonstration trial of Uttam AESA radar from December 2021 and if successful will be sent for serial production. As per Project director D Seshagiri of

(LRDE), Uttam AESA radar is 95% indigenous, with only one imported subsystem. The radar has the capacity to track 50 targets at a range greater than 100 km while engaging 4 targets simultaneously. All 83 Tejas Mark 1A and AMCA will come equipped with this radar. Uttam AESA radar will also be installed into upgraded

Sukhoi Su-30MKI The Sukhoi Su-30MKI (NATO reporting name: Flanker-H) is a twinjet Multirole combat aircraft, multirole air superiority fighter developed by Russia's Sukhoi and built under licence by India's Hindustan Aeronautics Limited (HAL) for the Indian A ...

and

Mikoyan MiG-29K The Mikoyan MiG-29K (russian: Микоян МиГ-29K; NATO reporting name: Fulcrum-D) is a Russian all-weather carrier-based multirole fighter aircraft developed by the Mikoyan Design Bureau. The MiG-29K was developed in the late 1980s from ...

currently in use as front line platform of

Indian Air Force The Indian Air Force (IAF) is the air arm of the Indian Armed Forces. Its complement of personnel and aircraft assets ranks third amongst the air forces of the world. Its primary mission is to secure Indian airspace and to conduct aerial w ...

and

Indian Navy The Indian Navy is the maritime branch of the Indian Armed Forces. The President of India is the Supreme Commander of the Indian Navy. The Chief of Naval Staff, a four-star admiral, commands the navy. As a blue-water navy, it operates sig ...

is the lead integrator and

Bharat Electronics Bharat Electronics Limited (BEL) is an Indian Government-owned aerospace and defence electronics company. It primarily manufactures advanced electronic products for ground and aerospace applications. BEL is one of nine PSUs under the Ministry ...

is major supplier of subsystems. LRDE already completed 250 hours of performance testing on two Tejas fighters as well as

Hawker 800 The Hawker 800 is a mid-size twinjet corporate aircraft. It is a development of the British Aerospace BAe 125, and was assembled by Hawker Beechcraft. Development In April 1981, the British Aerospace board sanctioned the programme to improve th ...

executive jet. National Flight Testing Centre had evaluated the radar and cleared it after performance tests. The integration problem of Astra BVRAAM due to older generation of radars will also be solved by Uttam.

Features

*Full

solid-state (electronics) Solid-state electronics means semiconductor electronics: electronic equipment using semiconductor devices such as transistors, diodes and integrated circuits (ICs). The term is also used as an adjective for devices in which semiconductor electro ...

radar, based on

GaAs Gallium arsenide (GaAs) is a III-V direct band gap semiconductor with a zinc blende crystal structure. Gallium arsenide is used in the manufacture of devices such as microwave frequency integrated circuits, monolithic microwave integrated circui ...

*High MTBCF (redundancy) *Extended detection ranges *Multi Target Tracking (50 Targets), Priority Tracking (4 Targets). *Simultaneous operation modes. *Solid-state, active phased array technology *

Pulse Doppler A pulse-Doppler radar is a radar system that determines the range to a target using pulse-timing techniques, and uses the Doppler effect of the returned signal to determine the target object's velocity. It combines the features of pulse radars and ...

, all aspect, shoot down capabilities *Simultaneous multi-target tracking and engaging *Simultaneous multi-mode operation *High ECM immunity *Ultra-low

side-lobe In antenna engineering, sidelobes are the lobes (local maxima) of the far field radiation pattern of an antenna or other radiation source, that are not the ''main lobe''. The radiation pattern of most antennas shows a pattern of "''lobes'' ...

antenna Antenna ( antennas or antennae) may refer to: Science and engineering * Antenna (radio), also known as an aerial, a transducer designed to transmit or receive electromagnetic (e.g., TV or radio) waves * Antennae Galaxies, the name of two collid ...

*Flexible interfaces allowing scalable design. *Modular hardware and software *Fast-beam agile system *Quad band TRM modules pack *High mission reliability (built with redundancy) *

IFF In logic and related fields such as mathematics and philosophy, "if and only if" (shortened as "iff") is a biconditional logical connective between statements, where either both statements are true or both are false. The connective is bicon ...

modes. * C-band

LOS LOS, or Los, or LoS may refer to: Science and technology * Length of stay, the duration of a single episode of hospitalisation * Level of service, a measure used by traffic engineers * Level of significance, a measure of statistical significance ...

Ku band The Ku band () is the portion of the electromagnetic spectrum in the microwave range of frequencies from 12 to 18 gigahertz (GHz). The symbol is short for "K-under" (originally german: Kurz-unten), because it is the lower part of the ori ...

satcom link.

Operational Modes

Uttam AESA radar has a total of 18 modes in Air to Air, Air to Ground and Air to Sea roles. The modes have been validated on-board a business jet and further proofing is being done on

HAL Tejas The HAL Tejas is an Indian, single engine, delta wing, light multirole fighter designed by the Aeronautical Development Agency (ADA) in collaboration with Aircraft Research and Design Centre (ARDC) of Hindustan Aeronautics Limited (HAL) for t ...

to validate the same on supersonic platform. * Air-to-Air ** TWS/Multi-target detection and tracking ** Multi-target ACM ** High resolution raid assessment * Air-to-Ground ** High resolution imaging (

SAR SAR or Sar may refer to: Places * Sar (river), Galicia, Spain * Sar, Bahrain, a residential district * Sar, Iran (disambiguation), several places in Iran * Sar, Tibet, Tibet Autonomous Region of China * Šar Mountains, in southeastern Europe ...

Mode) ** High resolution tracking (

Mode) ** AGR – Air-to-Ground Ranging ** RBM – Real Beam Map ** DBS – Doppler Beam Sharpening ** GMTI on RBM, SAR ** Weather * Air-to-Sea ** High resolution imaging (

Mode) ** High resolution tracking (

Mode) ** Sea search and multi-target tracking ** RS and

ISAR The Isar is a river in Tyrol, Austria, and Bavaria, Germany, which is not navigable for watercraft above raft size. Its source is in the Karwendel range of the Alps in Tyrol; it enters Germany near Mittenwald and flows through Bad Tölz, Munic ...

classification modes.

Gallery

References

{{Reflist Aircraft radars Military radars of India Defence Research and Development Organisation

Description

Features

Operational Modes

Gallery

See also

References