Thursday, January 20, 2011

The First SAR image acquired using the audio input port on a laptop


Today i acquired what i think is the first SAR image using the audio input on a laptop to digitize raw de-chirped radar data and transmit synchronization pulses.

This was done as part of preparation for Monday's lecture on SAR imaging for the MIT IAP course, 'Build a Small Radar System Capable of Sensing Range, Doppler and Synthetic Aperture Radar Imaging.'

A photo of the radar used to acquire this SAR image is shown. This radar is made out of coffee cans, a block of wood, a few mini-circuits parts, solderless breadboard, runs on 8 AA batteries, and uses your laptop's audio input port for digitization. Data is recorded as a .wav file then processed in MATLAB.

Complete details on this will be posted to the MIT Opencourseware site later this winter.