2025年2月7日 · 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?

2021年2月22日 · The Global Positioning System (GPS) is a U.S.-owned utility that provides users with positioning, navigation, and timing (PNT) services. This system consists of three segments: the space segment, the control segment, and the user segment.

2022年3月3日 · How accurate is GPS for speed measurement? As with positioning, the speed accuracy of GPS depends on many factors. The government provides the GPS signal in space with a global average user range rate error (URRE) of ≤0.006 m/sec over any 3-second interval, with 95% probability.

2021年6月16日 · What is GPS? The Global Positioning System is a U.S.-owned utility that provides users with positioning, navigation, and timing services. Overview; Space Segment; Control Segment; User Segment; Who Uses GPS? GPS is an essential element of the global information infrastructure.

2022年6月28日 · The GPS space segment consists of a constellation of satellites transmitting radio signals to users. The United States is committed to maintaining the availability of at least 24 operational GPS satellites, 95% of the time.

2018年1月23日 · Official U.S. government information about the Global Positioning System (GPS) and related topics

2014年11月25日 · GPS saves lives by preventing transportation accidents, aiding search and rescue efforts, and speeding the delivery of emergency services and disaster relief. GPS is vital to the Next Generation Air Transportation System (NextGen) that will enhance flight safety while increasing airspace capacity.

2022年1月3日 · The U.S. Space-Based Positioning, Navigation, and Timing Policy of 2021, signed by President Trump, establishes the following goal: “[T]o maintain United States leadership in the service provision, and responsible use of global navigation satellite systems, including GPS and foreign systems.”

2014年11月25日 · In this exercise we are going to simulate GPS positioning using 4 satellites. You are going to pretend to be a GPS receiver somewhere on the map and will figure out where you are based on the 4 "signals" you receive.

The United States Government defines the GPS Standard Positioning Service as follows: SPS is a positioning and timing service, and is provided on the GPS L1 frequency. The GPS L1 frequency, transmitted by all GPS satellites, contains a coarse acquisition (C/A) code and a navigation data message.