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Radar Fundamentals - Faculty

Prof. David JennDepartment of Electrical & Computer Engineering833 Dyer Road, Room 437 Monterey, CA 93943(831) Fundamentals2 Overview Introduction Radar functions Antennas basics Radar range equation system parameters Electromagnetic waves Scattering mechanisms Radar cross section and stealth Sample Radar systems3 Bistatic: the transmit and receive antennas are at different locations as viewed from the target ( , ground transmitter and airborne receiver). Monostatic: the transmitter and receiver are colocated as viewed from the target ( , the same antenna is used to transmit and receive). Quasi-monostatic: the transmit and receive antennas are slightly separated but still appear to be at the same location as viewed from the target ( , separate transmit and receive antennas on the same aircraft).Radio Detection and Ranging TARGETTRANSMITTER (TX)RECEIVER (RX)INCIDENT WAVE FRONTSSCATTERED WAVE FRONTSRtRr 4 Radar Functions Normal Radar functions:1.

Coordinate SystemsRadar coordinate systems spherical polar: (r,θ,φ) azimuth/elevation: (Az,El) or • The radar is located at the origin of the coordinate system; the Earth's surface lies in the x-y plane. • Azimuth (α) is generally measured clockwise from a reference (like a compass) but the spherical system azimuth angle (φ )is ...

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