BHARAT ELECTRONICS LIMITED

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Summer Training BHARAT ELECTRONICS LIMITED :

PRAMOD KUMAR DWIVEDI B TECH-4 th yeAR Branch- ece Summer Training BHARAT ELECTRONICS LIMITED

CONTENT:

CONTENT HISTORY Manufacturing Units of BEL in INDIA Product Of BEL Rotation Program RADAR and its Principle Types of RADAR Basic Component of RADAR system Various parameter measurement Attenuation and reflection of RADAR beam

HISTORY:

HISTORY Bharat Electronics Limited (BEL) was established in 1954 as a Public Sector Company. The company has a unique position in India of having dealt with all the generations of electronic component and equipment. BEL was ranked no.1 in the field of Electronics and 46 th overall among the top 1000 private and public sector undertakings in India by the Business Standard in its special supplement "The BS 1000 (1997-98)".

Manufacturing units of BEL across india:

Manufacturing units of BEL across india Bangalore (Corporate Head Office) Panchkula (Chandigarh) Kotdwara Ghaziabad Pune Hyderabad Navi MUMBAI Machilipatnam Chennai

PRODUCTS OF BEL:

PRODUCTS OF BEL Radar X-Ray tube Magnetrons Secure Fax Secure Telephone Broad cast equipment Space guided equipment Integrated circuit and Microwave circuit

Rotation Program:

Rotation Program

RADAR:

Introduction Radar range equation Radar is an electromagnetic system for the detection and location of reflecting objects such as aircrafts, ships, spacecraft, vehicles, peoples and the natural environment. It operates by radiating energy into space and detecting the reflected echo signal from an object, or target. RADAR Where τ = the pulse duration (S/N) = required signal-to-noise K = Boltzmann’s constant T s = the system noise temperature The preceding simplified relationships neglected such things as atmospheric attenuation, solar and galactic noise, clutter, jamming, and system losses.

RAdio Detection And Ranging:

RAdio Detection And Ranging

Basic Principle:

Basic Principle An elementary form of radar consists of a transmitting antenna emitting electromagnetic radiation. A transmitter generates an electromagnetic signal (such as sine wave) that is radiated into space by an antenna. A portion of the transmitted energy is intercepted by the target and reradiated in many directions. The re-radiation directed back towards the radar is collected by the radar antenna, which delivers it to a receiver. There it is processed to detect the presence of the target and determine its location. The range, or distance, to a target is found by measuring the time it takes for the radar signal to travel to the target and return back to the radar.

Basic components of RADAR System::

Basic components of RADAR System: Synchronizer Transmitter Display Receiver Power Supply Duplexer switch Antenna

Radio Waves:

Radio Waves Type of EM radiation Travel with speed of light Wavelength 100 meters to 30 cm Frequency 3 MHz to 1000 MHz Naturally occurring Artificially generated

Types Of RADARS:

Pulse Transmission Continuous Wave Types Of RADARS

Application Of Radar:

Application Of Radar Surveillance Tracking Fire control Target ID/ discrimination Moving target detection Air traffic control Missile seekers

Radar Range Measurement:

Radar Range Measurement Transmitted Pulse Reflected Pulse Range Target Target range = c t 2 where c = speed of light t = round trip time

Determining Height Of Oject :

Determining Height Of Oject

Various types Of Radar and its application:

Various types Of Radar and its application Search RADAR scans large area Targeting RADAR scans small area Navigational RADAR used on commercial ships Mapping RADAR remote sensing , geographical

Effect on RADAR beams:

Effect on RADAR beams Atmospheric attenuation Reflection of earth’s surface Over the horizon diffraction Atmospheric refraction

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