Broadcast Positioning System (BPS) is an alternative to GPS designed for timing and positioning over ATSC 3.0 digital TV signals, and mainly designed as a backup solution for national security. GPS is critical in providing not only location data, but also timing data for critical infrastructure such as power grid, telecommunication networks, and so on. However, GPS signals can be spoofed, and/or satellites could potentially be damaged or even taken down. That’s where BPS comes in as an alternative with a much broader network of base stations, and both GPS and BPS signals can be compared, meaning it can be used to detect spoofing as well. It works by adding a preamble with timing data and a Data PLP (Physical Layer Pipe) with tower information and location. One tower is enough for timing data, and positioning will also be possible with four towers within range. Time accuracy is 100ns (95% […]
BPS is a GPS alternative working over ATSC 3.0 digital TV signals
