San Diego City Robotics

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Archive for June, 2007

Hydrophones Mathematical Model

The linked file presents the mathematical model underlying the direction finding algorithms as implemented in the simulation program and the actual vehicle. Note that without an enormous budget, nobody in the competition can determine exactly where the pinger is. The best that can be done is to determine the approximate direction.
Hydrophone Model

If You Must Use Analog Filters, …

you may as well use good ones as shown in the linked file. These are 40dB/decade for both low pass and high pass. Figure out the math for yourself.
Analog Filters