GPS: The Global Positioning System

How to Correct Your Address in GPS Devices, Apps, & Online Maps

Do GPS devices show your home or business in the wrong place? The problem is not GPS! It's the mapping software.

Common Questions

• How do I add or correct my address in GPS devices, apps, and maps?
• What can I do about trucks driving through my neighborhood?
• How do I report GPS service outages?
• Can GPS help me find my lost phone?
• How does GPS work?
• How accurate is GPS?
• How vulnerable is GPS to malicious jamming?

Featured Content

• What is GPS?
• How GPS Works
• Truckers: Don't Use Consumer GPS Devices!
• GPS Jamming is Illegal

What's Hot for Pros

• PNT advisory board, Apr 2024
• CGSIC Denver 2023
• Technical documentation
  • Public ICWG, Sep 2023
  • PRN assignments, Apr 2023
  • GPS III antenna patterns (USCG.gov)
  • ICD uprevisions, Aug 2022

News Items

• Mar 26: PNT Advisory Board to convene Apr 24-25 in Colorado Springs
• Nov 20: PNT Advisory Board to convene December 6-7 in Houston, TX
• Sep 19: DHS Invites Critical Infrastructure Owners and Operators to GPS Spoofing Test Event
• Apr 12: PNT Advisory Board to convene May 3-4 in Annapolis, MD

New Additions to GPS.gov

• Mar 27: Dec 2023 advisory board minutes (PDF)
• Jan 5: ESG response to advisory board (PDF)
• Dec 6: Advisory board bios: Bryan Chan; Logan Scott; William Shelton
• Dec 4: Dec 2023 advisory board meeting

Resilience Through Responsible Use of PNT

Information and resources for improving positioning, navigation, and timing resilience, especially in critical infrastructure

Report/Lookup GPS
Service Disruptions