I am an avid marksman in both archery and firearms and have been considering for sometime on creating a target scoring device that can be used for both hobbies. Specifically, I am interested in a technology that can detect the ballistics of projectiles traveling at both subsonic and supersonic speeds. The primary focus of the device is to triangulate, with high accuracy, the impact location of the projectiles after hitting a target. This device would be located safely below the target with the radar cone ideally aligned with the x and y axes of surface of the target. The device will need to detect the projectile and triangulate its virtual impact position within a minimum 1 meter square target area and up to 2.5 meters square. It would also need to accurately detect impacts as near as 24 centimeters to itself. I would also like to have the accuracy to within 3mm or better and finally as an option; the means to calculate the speed of the projectiles at the target.
I have experience with scoring systems that rely on ultrasonic microphones to detect bullet impacts and are accurate to within 3mm but these only work with supersonic projectiles as they detect the supersonic cone for triangulation. Another draw back is that the microphones are exposed line of sight and make them vulnerable to destruction by the projectiles.
I am assuming that doppler radar would be a superior means of triangulation and speed detection, so my thought is this is the way to go. Are there any off the shelf sensors that may be used for this purpose? Perhaps something DIY friendly that can be used in conjunction with an Arduino type wireless board so the data can be accessed and translated by a software algorithm for visual representation on a screen.
I have experience with scoring systems that rely on ultrasonic microphones to detect bullet impacts and are accurate to within 3mm but these only work with supersonic projectiles as they detect the supersonic cone for triangulation. Another draw back is that the microphones are exposed line of sight and make them vulnerable to destruction by the projectiles.
I am assuming that doppler radar would be a superior means of triangulation and speed detection, so my thought is this is the way to go. Are there any off the shelf sensors that may be used for this purpose? Perhaps something DIY friendly that can be used in conjunction with an Arduino type wireless board so the data can be accessed and translated by a software algorithm for visual representation on a screen.