I have been looking into something like this on and off for a while just for the hell of it. I also found a interesting project on tracking model rockets using LoRA. When I have more space I plan to build one of those for testing hobby rockets I want to build. Archive: https://archive.today/1kbqs From the post: >>I’ve been looking for a system that can provide fast & accurate position measurement within a defined area; this is generally known as an RTLS (Real Time Location System). My previous experiments have involved optical measurements, which have good accuracy, but are constrained by line-of-sight and range issues. So why not use wireless, and measure the time it takes for a radio pulse to travel from transmitter to receiver? Given the speed of light is roughly 300 mm (or 1 foot) per nanosecond, it may seem impossible to get an accurate position that way, but Decawave claim that their DW1000 time-of-flight chip gives measurements around 100 mm (4 inch) accuracy, using an Ultra Wideband (UWB) radio.