Core Viewpoint - The Broadcast Positioning System (BPS) is introduced as an alternative to GPS, utilizing ATSC 3.0 digital television signals for timing and positioning, primarily as a backup solution for national security [1][6]. Technology Overview - BPS operates by embedding timing data in a preamble and location data in a Physical Layer Pipe (PLP), allowing for accurate time and position estimation with a single TV tower providing time and four towers providing both time and position [3][9]. - The expected time accuracy is 100 nanoseconds (95% of the time), with an average positioning accuracy of approximately 100 meters [3][9]. Development Phases - The development of BPS is structured in six phases, with public deployment of ATSC 3.0-based timing expected between 2025 and 2027, followed by positioning tests and full deployment by 2029 [6][16]. Current Testing and Infrastructure - NAB Technology is currently testing BPS using a limited number of ATSC 3.0 base stations, employing advanced equipment to measure and compare GPS and BPS signals [4][5]. - The existing infrastructure for ATSC 3.0 is already in place, allowing for low incremental costs for BPS deployment [15]. Advantages of BPS - BPS offers several advantages, including independence from GPS, the ability to operate during emergencies, frequency diversity, and in-building coverage [15][14]. - It is designed to function when GPS signals are spoofed or unavailable, making it a reliable alternative [15]. Use Cases - Potential applications of BPS include delivering GPS-independent time and position, detecting GPS spoofing, and providing hybrid location services [16][15]. Market Coverage - The BPS system is expected to cover a significant portion of the continental United States, with various station counts indicating increasing cumulative coverage [22]. Government Support - There is a push for public-private partnerships to fund research and development for BPS, indicating government support for this free-to-use service [18].