Simulation of 2-D SAR Imaging using Range Doppler
2016-08-23
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The history of SAR and radar in general is important when investigating methods
of SAR imaging. Radar was initially developed in World War II for tracking of ships and
aircrafts. The radio frequency used had the advantage of being able to penetrate through
heavy weather and darkness to locate targets when remote sensing with visible light
would have failed. Conventional radar systems operate by measuring range to the target
from the time it requires for the radar pulse to travel to and echo back from the target and
direction to the target from how much of the signal was received compared to the
direction of the antenna. The Doppler shift of the pulse as it reflects off of the target also
carries information on the speed of the target. Dennis Gabor, the engineer at British
Thomson-Houston who invented holography in 1947, laid the groundwork for SAR with
the principles of wavefront reconstruction. Carl Wiley of Goodyea
of SAR imaging. Radar was initially developed in World War II for tracking of ships and
aircrafts. The radio frequency used had the advantage of being able to penetrate through
heavy weather and darkness to locate targets when remote sensing with visible light
would have failed. Conventional radar systems operate by measuring range to the target
from the time it requires for the radar pulse to travel to and echo back from the target and
direction to the target from how much of the signal was received compared to the
direction of the antenna. The Doppler shift of the pulse as it reflects off of the target also
carries information on the speed of the target. Dennis Gabor, the engineer at British
Thomson-Houston who invented holography in 1947, laid the groundwork for SAR with
the principles of wavefront reconstruction. Carl Wiley of Goodyea
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