Onward and Downward!
This is the new design that we are leaning towards. It is based loosely on the idea of a blimp or airship with a single thruster in the front. In the coming months we will be building and testing it.
This is a short rough CAD-sketch and animation of the design.
The linked document outlines some of the mathematics required for analysing incoming audio signals arriving at multiple sensors (hydrophones). The challenge is to compare accurately the arrival times of the incoming signal with respect to some internal reference signal and from those results determine the differences in arrival times. In preference to this pure math […]
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
The linked document outlines the method for determining the pinger frequencies to the nearest fraction of a Hertz. We don’t actually need the frequency per se, but we do need to know the signal period accurate to the nearest multiple of the DSP clock. This number is critical to locking on to the pinger burst.
Pinger […]
The linked file illustrates a possible approach to locating the Buoys with the flashing lights. Admittedly this is just a science experiment for this year, but it could give us some pointers for what to do in the future.
Buoy Challenge
The linked document descripbes the hydrophone sampling algorithms. Note that ALL the analog inputs