I found out about the HB100 doppler radar sensor online recently and it gave me an idea for a project. So far, every sensor I've seen for Arduino, such as the Ping/Sharp IR/etc., can measure distance on the z-axis and/or calculate speed on that axis (the HB100 included). I'm wondering if there is a way to measure movement on more than just the z-axis. I don't believe the HB100 could do this by itself. Anyone know? I believe it is another z-axis only sensor. However, if it can't, I'm thinking there's a way that a pair of them would be able to calculate movement to the left and right based upon the difference in the signal return.
So why the HB100? Well, the Ping is only good for something about the size of an 10x12 room. The Sharp IR, even less than that. I'm looking for something with a working range of at least 100'. I want more than just a "radar gun". I want to plot movement out on both the zoom axis and horizontal axis and display it on a screen, ala the motion tracker from Aliens. I'm thinking the practical application for such a device could include tracking movement in the woods at night...no more wild animals sneaking up on your camp ;).
Anyone have some thoughts as to how I could accomplish this?