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Free Powerpoint Templates. Mehran University College Of Engineering And Technology Khairpur Mir’s Name:- Gul Nawaz Khan Mahar Roll No:- (12-K,EL 17), (12-K,EL 01), (12-K,EL 03), (52) Assignment:- Computer Applications & E-Learning Teacher:- Engineer Ahsanullah Memon

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  1. Free Powerpoint Templates

  2. Mehran University College Of Engineering And Technology Khairpur Mir’s • Name:- Gul Nawaz Khan Mahar • Roll No:- (12-K,EL 17), (12-K,EL 01), (12-K,EL 03), (52) • Assignment:- Computer Applications & E-Learning • Teacher:- Engineer Ahsanullah Memon • Last Date of Submission:- 03-3-2012

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

  4. Radar equation:The power Pr returning to the receiving antenna is given by the radar equation:where;Pt = transmitter powerGt = gain of the transmitting antennaAr = effective aperture (area) of the receiving antennaσ = radar cross section, or scattering coefficient, of the targetF = pattern propagation factorRt = distance from the transmitter to the targetRr = distance from the target to the receiver.

  5. 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

  6. Parabolic Antenna

  7. Doppler Effect Where :- • fis the apparent frequency • vis velocity of wave in the medium • vobsis the velocity of the receiver relative to the medium; positive if the receiver is moving towards the source.  • vs is the velocity of the source relative to the medium; positive if the source is moving away from the receiver • fO is the frequency of wave

  8. Applications of RADAR: • Search RADAR scans a large area • Targeting RADAR scans a small area • Navigational RADAR used on commercial ships and aircrafts • Mapping RADAR remote sensing and geographic applications • Weather RADAR locate precipitation, its motion & future • RADAR is used for Air Traffic Control

  9. Incoherent Scatter Radar:A RADAR application • Used to study the earth’s Ionosphere and its interaction with the upper atmosphere, the magnetosphere and the solar wind

  10. RADAR can measure Pressure • The strength of the echo received from the Ionosphere measures the number of electrons able to scatter radio waves or what we call -The Electron Pressure

  11. RADAR in weather forecasting • Locate precipitation • Calculate its motion • Estimate its type (rain, snow) • Forecasts future position and intensity

  12. Conclusion: • Radar is a way to detect and study far off objects by transmitting a radio pulse in the direction of the target and observing the reflection of the wave. • Its basically a radio echo.

  13. Thank You Arvind Chaubey

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