World war II & The Origins Of Radar
Before World War II, experiments were performed with electronic systems to find the range of aircraft or other targets by transmitting radio pulses and measuring the time delay in receiving an echo back from the target. During the war, “radio detection and ranging (radar)” went through a rapid evolution and became an important weapon and tool in the conflict, with the opponents developing radars of increasing sophistication — as well as “electronic intelligence (ELINT)” systems to spot enemy radars and “electronic countermeasures? (ECM)” systems to jam them.
By the end of the conflict, radar systems had advanced to a level inconceivable before the war, and have continued to be refined in the postwar era. Radar remains an important military and civil technology. This document provides an introduction to radar concepts and terminology.
• Basic Principles Of Radar and Early Radar Technology
1. RADIO WAVE FREQUENCY and WAVELENGTH
2. RADIO WAVE POLARIZATION PHASE INTERFERENCE and PROPAGATION
3. RADIO SYSTEM BASICS
4. ANTENNA BASICS
5. A SIMPLE PULSE RADAR SYSTEM
6. TRIODES and MAGNETRONS
7. THE RADAR RANGE EQUATION
8. CW ALARM SYSTEMS and DOPPLER SHIFT
9. SEARCH RADARS PPI and HEIGHT FINDERS
10. TRACKING RADARS LOBE SWITCHING CONICAL and HELICAL SCANNING
11. AI ASV and AEW RADARS RADAR DISPLAYS
12. IFF RADAR BEACONS and RADAR REFLECTORS
13. CONTINUOUS WAVE RADARS
14. ORIGINS OF ELECTRONIC COUNTERMEASURES
