Tag: Radar
HIGH FREQUENCY AS A WEAPON
Het toepassen van de beginselen van de elektronische oorlogsvoering (EOV) tijdens de tweede wereldoorlog. Gebruik van stoorzenders, uitluisteren van verbindingen, gebruik van chaff om...
ORIGINS OF ELECTRONIC COUNTERMEASURES
Almost from the outset, the development of radars was accompanied by the development of technologies to defeat them, or "electronic countermeasures (ECM)". The first...
CONTINUOUS WAVE RADARS
Simple continuous wave detectors and radars were discussed in the previous chapter. During the war, "proximity fuzes" were developed for anti-aircraft gun shells, allowing...
IFF, RADAR BEACONS, & RADAR REFLECTORS
The invention of radar to track aircraft immediately led to the issue of how to distinguish "friendly" aircraft from "hostile" aircraft. If an aircraft...
AI, ASV, & AEW RADARS / RADAR DISPLAYS
If fighters were sent up against intruders in daylight and clear weather, ground-based radars could generally get them close enough to perform an interception...
TRACKING RADARS / LOBE SWITCHING / CONICAL & HELICAL SCANNING
The search radar / height finder radar combination was fine for vectoring fighters against intruders, but antiaircraft guns needed a single radar that could...
SEARCH RADARS PPI and HEIGHT FINDERS
The sort of simple pulse radar system described in the previous chapter was more or less available at the beginning of World War II,...
CW ALARM SYSTEMS / DOPPLER SHIFT
The simple pulse radar described above was actually preceded in the prewar timeframe by simpler systems that consisted of a transmitter sending a signal...
THE RADAR RANGE EQUATION
The tools provided so far give enough information for understanding the "radar range equation", the most fundamental formula for radar operation. As its name...
TRIODES & MAGNETRONS
Early radars were based on traditional vacuum-tube technology. The basic classic vacuum tube was the "triode", which consisted of a vacuum-sealed tube with plates...