Lecture 1 module 1 - radar
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Radar uses radio waves to detect the range, altitude, direction, or speed of both moving and fixed objects such as aircraft, ships, motor vehicles, weather formations, and terrain. It works by transmitting pulses of radio waves and measuring the time for their reflection to return to the receiver. By measuring frequency shifts of the reflected signal, radar can detect how fast a target is moving using the Doppler effect. Typical applications of radar include military uses such as air traffic control and weather monitoring.
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Lecture 1 module 1 - radar
- 1. RADAR RAdio Detection And Ranging
- 3. How to find out the location of the target? How to find out the velocity of the target? • By measuring frequency shift using Doppler effect.
- 10. TP
- 11. 1 nmi (nautical mile) = 1.852 Km
- 20. Klystron or TWT or transistor amplifier Or power osc. Like magnetron Low power signal w/g Mechanically/Electronically steered planar/phased array Scan
- 21. PPI (plain position indicator)
- 23. Not necessarily the limits, may use up to 240 GHz (mm wave radar)
- 26. However it
- 38. integration.
- 40. When to use pre / post detection integration?
- 61. Typical scan timeApplications General 10 - 12 sec long-range military 4 sec short-range military 1-2 sec high resolution radars 1 sec
- 62. Solution To obtain more complete coverage