Home > General Studies > RADAR Technology
RADAR Technology uses radio waves to detect and track objects, supporting defence, aviation, weather forecasting, navigation and disaster management.
By Vajiram Content Team – May 14, 2026, 18:06 IST
RADAR Technology is one of the most important modern detection systems used for surveillance, navigation, defence, meteorology, aviation, disaster management and space observation. It works by transmitting radio waves and receiving their reflected echoes from objects such as aircraft, ships, rain clouds, missiles, vehicles or satellites. RADAR can accurately determine distance, direction, speed and movement of targets in all weather conditions, during both day and night, making it more reliable than optical systems.
The term RADAR stands for Radio Detection And Ranging. It is an active electromagnetic sensing system that uses radio or microwave waves to detect, locate, track and identify objects at considerable distances. A transmitter emits radio pulses toward a target and the reflected energy returns as an echo to the receiver. By measuring the time delay, antenna direction and Doppler frequency shift, the radar calculates range, position and velocity. Modern RADAR Systems operate from nearly 400 MHz to 40 GHz frequencies and are widely used in military operations, weather forecasting, transportation safety, remote sensing and satellite monitoring.
RADAR Systems consist of multiple integrated components that collectively perform transmission, reception, processing and target tracking functions.
RADAR Technology evolved gradually from basic radio wave experiments to advanced electronically scanned systems used in defence, weather forecasting and space monitoring.
RADAR Systems are classified according to operating frequency bands and specialized applications across defence, weather monitoring, aviation, navigation and remote sensing.
Different radar modes are designed to measure distance, velocity and target movement according to operational requirements and technological capabilities.
India has rapidly expanded radar infrastructure across meteorology, defence, aerospace, maritime security and disaster management through indigenous development and international collaboration.
RADAR operates through a systematic process involving transmission, reflection, reception, calculation and display of electromagnetic signals from targets.
RADAR Technology has extensive applications in defence, aviation, disaster management, transportation, agriculture, environmental monitoring and scientific research.
Last updated on May, 2026
→ UPSC Prelims Exam Analysis 2026 will be available at 5:00 PM by the expert faculty at Vajiram and Ravi.
→ UPSC Prelims Provisional Answer Key 2026 out for GS Paper 1 and CSAT.
→ UPSC Prelims Question Paper 2026 Out, Download GS Paper 1 PDF conducted on 24th May 2026.
→ UPSC Prelims 2026 will be conducted on 24th May, 2026 & UPSC Mains 2026 will be conducted on 21st August 2026.
→ UPSC Prelims Admit Card 2026 has been released on the official website @upsconline.nic.in on 15th May 2026..
→ Prepare effectively with Vajiram & Ravi’s UPSC Prelims Test Series 2026 featuring full-length mock tests, detailed solutions, and performance analysis.
→ UPSC Final Result 2025 is now out.
→ UPSC has released UPSC Toppers List 2025 with the Civil Services final result on its official website.
→ Anuj Agnihotri secured AIR 1 in the UPSC Civil Services Examination 2025.
→ UPSC Notification 2026 & UPSC IFoS Notification 2026 is now out on the official website at upsconline.nic.in.
→ UPSC Calendar 2027 has been released.
→ Check out the latest UPSC Syllabus 2026 here.
→ The UPSC Selection Process is of 3 stages-Prelims, Mains and Interview.
→ Enroll in Vajiram & Ravi’s UPSC Mains Test Series 2026 for structured answer writing practice, expert evaluation, and exam-oriented feedback.
→ Join Vajiram & Ravi’s Best UPSC Mentorship Program for personalized guidance, strategy planning, and one-to-one support from experienced mentors.
→ Shakti Dubey secures AIR 1 in UPSC CSE Exam 2024.
→ Also check Best UPSC Coaching in India
Q1. What does RADAR stand for?+
Ans. RADAR stands for Radio Detection And Ranging. It uses radio waves to detect and track objects.
Q2. Who developed the first practical RADAR System?+
Ans. Robert Watson-Watt of the United Kingdom developed the first practical RADAR System in 1935.
Q3. Which radar band is mainly used for cyclone detection in India?+
Ans. S band and C band Doppler Weather Radars are mainly used for cyclone and weather monitoring in India.
Q4. What is the role of the Doppler Effect in radar?+
Ans. The Doppler Effect helps radar measure the velocity and direction of moving targets through frequency changes.
Q5. What is Mission Mausam related to?+
Ans. Mission Mausam is India’s ₹2,000 crore initiative launched in 2024 to modernize weather forecasting and radar infrastructure.
Tags: radar technology radio detection and ranging
Crowding In & Crowding Out Effect in Economy
Monsoon Breaks
Statutory, Regulatory and Various Quasi-Judicial Bodies
Recent Post
UPSC Exam 2026
UPSC Courses
About Vajiram & Ravi
About UPSC Exam
UPSC Courses
Install App
Connect on Social Media
Want to Enroll for UPSC CSE Courses ?
Get all your questions answered with our expert counseling!
Leave a Reply