I would like to build a robot that can track a rocket (most likely no higher than 175 meters) and based on angle at its greatest and the launch location calculate approximate height. I would like to know if this is possible if I don't want to spend more than $125 USD on any one component of the robot. All of the above with the exception of the last sentence are tentative and are just the first thing that I thought of. This is not the only task I would like this robot to perform if that makes any difference. If you have any suggestions as far as a better method to find this number using a robot I would appreciate any suggestions. I am new to autonomous robots but have programmed in c++, basic, c# and python. I am looking at using this project board: PICAXE-28 Project Board and this microprocessor: PICAXE-28X1 IC. I have very little experience with homemade robots but I am willing to spend a while on this project along the lines of years if necessary. Lastly if I am posting in the wrong part of the forum let me know. Thanks.