Broadcast RTK (eGPS)

Broadcast RTK eGPS · enhanced GPS

The world's first commercial centimeter-level positioning service delivered over terrestrial broadcast networks — 방송망 기반 세계 최초 cm급 정밀측위 상용 서비스.

Why broadcast?

RTK (Real-Time Kinematic) positioning needs a continuous stream of GNSS correction data. Today that stream is delivered almost exclusively over cellular unicast (NTRIP): every receiver opens its own connection, so cost and network load grow linearly with the number of users, and coverage follows the cellular grid.

A terrestrial broadcast network inverts that economics. One transmitter delivers the same correction stream to an unlimited number of receivers — vehicles, drones, IoT sensors — with no per-device connection, no congestion, and coverage engineered for reception at the edge of the service area. Combined with LTE/5G as a return and infill channel, the two networks hedge each other’s outages: where cellular shadows, broadcast fills, and vice versa.

Broadcast RTK puts this into commercial practice: a hybrid architecture combining nationwide GNSS reference stations, DMB and ATSC 3.0 broadcast delivery, and LTE/5G — providing centimeter-level accuracy while cutting cellular data cost by ~98%. Its global service brand is eGPS (enhanced GPS).

Broadcast RTK — ATSC 3.0-based precise PNT infrastructure

Key facts

Accuracy — centimeter-level (RTK fixed) via broadcast-delivered corrections
Infrastructure — ~100 GNSS reference stations nationwide, delivered over DMB & ATSC 3.0 with LTE/5G hybrid
Economics — ~98% reduction in cellular data cost versus NTRIP unicast
Validation — 137,480 samples / 38.19 hours of cross-validation across four regions (Seoul–Gangneung, DC/Baltimore, Denver, Salt Lake City), demonstrating a bidirectional tail-risk hedge between broadcast and cellular
Global expansion — U.S. (EdgeBeam), India (D2M), Brazil (TV 3.0 / DTV+)
Applications — AI road-hazard sensing buses, geofencing, low-power IoT facility monitoring, drone operations

Milestones

July 2026
Three papers at IEEE BMSB 2026 João Pessoa, Brazil
Coverage & outage bounding in hybrid ATSC 3.0/LTE RTK delivery · end-to-end latency for emergency alerting · nationwide time sourcing (BPS)
June 2026
KIBME Summer Conference — RAPA & TTA special sessions
Next-gen broadcast architecture (B2X, ATSC TG3/S44) and ultra-precise PNT infrastructure over ATSC 3.0
May 2026
KOBA 2026 Media Conference
BPS and Broadcast RTK (eGPS) development trends — four-region validation results published
April 2026
NAB Show 2026 — eGPS live demonstration Las Vegas
Korea broadcast-technology pavilion (RAPA) — ATSC 3.0 cm-level positioning demo; BPS/Broadcast-PNT rises on the NextGen TV agenda
February 2026
ATSC IT-5 presentation — drone-based antenna verification
Field verification of DTV antenna patterns using RTK-equipped drones
October 2025
TTA Technical Report TTAR-07.0048
Drone-based field verification of terrestrial DTV antenna patterns — measurement infrastructure underpinning broadcast-PNT deployment
November 2023
ITS Korea Fall Conference — ATSC 3.0 vehicle infotainment session
cm-level ATSC 3.0-based RTK introduced alongside D2V field tests

In the news

ATSC 3.0 · DTV+ (TV 3.0) · Broadcast RTK · EdgeBeam — auto-collected news since June 01, 2026 (last updated 2026-07-04).

  1. TV 3.0: Globo terá integração com aplicativos de celulares em tempo real TudoCelular.com · BR
    2026.07.03
  2. DTV+ da Globo terá interação personalizada com apps móveis Mobile Time · BR
    2026.07.03
  3. SET Expo 2026 revela primeiros painéis sobre IA, streaming e TV 3.0 jwave.com.br · BR
    2026.07.03
  4. EBC Lança TV 3.0: Uma Nova Era para a Comunicação Pública no Brasil Metrô News Jornal · BR
    2026.07.03
  5. Anatel aprova reorganização do espectro para viabilizar a TV 3.0 DPL News · BR
    2026.07.02
  6. TV Tarobá lança nova programação e aposta em interatividade e TV 3.0 Tarobá · BR
    2026.07.02
  7. TV 3.0 permitirá usar gov.br e SUS Digital pela televisão Poder360 · BR
    2026.07.02
  8. EBC lidera implementação da TV 3.0 para integrar serviços públicos e tecnologia Fato Paulista · BR
    2026.07.02
  9. Jericho Receivers Unveils Software-Defined Atomic Clock With ATSC 3.0/BPS Source Support TVTechnology · US
    2026.07.02
  10. TV 3.0 passa por "ajustes" antes de lançamento oficial no Brasil, diz ministro Canaltech · BR
    2026.07.02
  11. TV 3.0 começa a chegar ao Brasil e amplia integração entre televisão e serviços digitais Capital Digital · BR
    2026.07.02
  12. TV 3.0 vai sincronizar rádio e TV sem atraso, diz especialista Canaltech · BR
    2026.07.02
  13. Jericho Receivers Launches Software Defined Atomic Clock – ATSC 3.0 Broadcast GPS-Independent Timing Business Wire · US
    2026.07.01
  14. A3SA Disputes Weigel Assertions that NextGen TV Threatens EAS TVTechnology · US
    2026.06.30
  15. 삼성전자, 美 NAB서 차세대 방송 핵심 기술 시연 Samsung Global Newsroom · KR
    2026.06.29
  16. Enter to Win a NextGen TV Equipment Package! myfox28columbus.com · US
    2026.06.26
  17. 삼성전자, 美 최대 방송사 그룹과 차세대 방송 표준(ATSC3.0) 협력 MOU 체결 Samsung Global Newsroom · KR
    2026.06.24
  18. NAB NextGen TV News Technology Lab Releases Report On 3.0-Based Emergency Alert Uses TVTechnology · US
    2026.06.17
  19. Sinclair’s One Media to host ATSC 3.0 event in Maryland TheDesk.net · US
    2026.06.16
  20. Coming Next Week: A NextGen TV Interoperability Event Radio & Television Business Report · US
    2026.06.15
  21. 지알엠·씨너렉스, 고정밀 위치정보 활용 측량 솔루션 사업화 나서 에너지플랫폼뉴스 · KR
    2026.06.15
  22. Sinclair's ONE Media Technologies to Host ATSC 3.0 NextGen TV Interoperability Event Sinclair, Inc · US
    2026.06.15
  23. 지알엠·씨너렉스, 고정밀 측량시장 공략… ‘GNSS RTK 기반 범용 측량 솔루션’ 공동 추진 에너지데일리 · KR
    2026.06.15
  24. Weigel To FCC: ATSC 3.0 Corrupts Free and Simple TV Service Radio & Television Business Report · US
    2026.06.05
  25. Weigel to FCC: NextGen TV may disrupt free access to broadcast TV TheDesk.net · US
    2026.06.05
  26. Congress Weighs the State of U.S. PNT: GPS Modernization, Interference Enforcement and the Search for Complementary Architecture Inside GNSS · US
    2026.06.05
  27. Sinclair Launches NextGen TV Campaign in Columbus, Ohio TVTechnology · US
    2026.06.04
  28. Broadcast alliance pushes back on LPTV 5G standard petition, backs ATSC 3.0 path NewscastStudio · US
    2026.06.04
  29. Merkhet’s Sam Matheny Urges Congress to Expedite BPS Deployment TVTechnology · US
    2026.06.04
  30. Broadcasters launch company to advance Broadcast Positioning System GPS World · US
    2026.06.03
  31. Merkhet Solutions Formed By NAB To Commercialize Broadcast Positioning System TV News Check · US
    2026.06.02
  32. NAB Launches Merkhet Solutions to Advance BPS Deployment radioworld.com · US
    2026.06.02
  33. NAB Launches Merkhet Solutions to Advance Deployment of BPS TVTechnology · US
    2026.06.02
  34. NAB Ramps Up BPS Deployment Efforts With ‘Merkhet’ Launch Radio & Television Business Report · US
    2026.06.02
  35. NextNav, Opponents to Square Off at House GPS Hearing Broadband Breakfast · US
    2026.06.02

Publications & talks

Coverage & outage bounding in hybrid ATSC 3.0/LTE RTK delivery — IEEE BMSB 2026 (to appear)
ATSC 3.0 end-to-end latency for emergency alert delivery — IEEE BMSB 2026 (to appear)
Nationwide time sourcing over terrestrial broadcast networks (BPS Project) — IEEE BMSB 2026 (to appear)
Ultra-precise PNT infrastructure over terrestrial broadcast — BPS & Broadcast RTK — KOBA 2026 deck2026.05
Broadcast RTK & global expansion (Global eGPS) — KIBME TTA special session deck2026.06
TTAR-07.0048 — drone-based DTV antenna pattern verification — TTA technical report2025.10

All publications → · All presentation decks →