[{"n": "BeiDou", "u": "/e/satellite-navigation-and-gps/beidou/", "s": "China's global satellite navigation system, fully operational since July 2020."}, {"n": "Galileo (satellite navigation system)", "u": "/e/satellite-navigation-and-gps/galileo-satellite-navigation-system/", "s": "European Union's civilian GNSS providing independent high-precision positioning."}, {"n": "Global Positioning System", "u": "/e/satellite-navigation-and-gps/global-positioning-system/", "s": "A satellite navigation system providing global positioning and timing."}, {"n": "GLONASS", "u": "/e/satellite-navigation-and-gps/glonass/", "s": "Russian satellite navigation system offering global coverage and comparable precision to GPS."}, {"n": "Automatic vehicle location", "u": "/e/satellite-navigation-and-gps/automatic-vehicle-location/", "s": "Automatic vehicle location determines and transmits a vehicle's geographic position."}, {"n": "European Geostationary Navigation Overlay Service", "u": "/e/satellite-navigation-and-gps/european-geostationary-navigation-overlay-service/", "s": "European satellite-based augmentation system for GPS and future Galileo."}, {"n": "Garmin Forerunner", "u": "/e/satellite-navigation-and-gps/garmin-forerunner/", "s": "GPS sports watches for runners and triathletes."}, {"n": "GPS-aided GEO augmented navigation", "u": "/e/satellite-navigation-and-gps/gps-aided-geo-augmented-navigation/", "s": "India's satellite-based augmentation system for precise air navigation."}, {"n": "GPS tracking unit", "u": "/e/satellite-navigation-and-gps/gps-tracking-unit/", "s": "A device that tracks assets using GNSS and transmits location data."}, {"n": "United States v. Jones (2012)", "u": "/e/satellite-navigation-and-gps/united-states-v-jones-2012/", "s": "GPS tracking on a vehicle is a Fourth Amendment search."}, {"n": "Vehicle tracking system", "u": "/e/satellite-navigation-and-gps/vehicle-tracking-system/", "s": "Hardware and software system for monitoring vehicle location and data."}, {"n": "Wide Area Augmentation System", "u": "/e/satellite-navigation-and-gps/wide-area-augmentation-system/", "s": "FAA system augmenting GPS for aviation accuracy, integrity, and availability."}, {"n": "World Geodetic System", "u": "/e/satellite-navigation-and-gps/world-geodetic-system/", "s": "Standard for Earth-centered coordinates, geodesy, and satellite navigation."}, {"n": "Transit (satellite navigation system)", "u": "/e/satellite-navigation-and-gps/transit-satellite-navigation-system/", "s": "First operational satellite navigation system, used by U.S. Navy."}, {"n": "Strava", "u": "/e/satellite-navigation-and-gps/strava/", "s": "Social fitness tracking platform using GPS data."}, {"n": "Assisted GNSS", "u": "/e/satellite-navigation-and-gps/assisted-gnss/", "s": "A-GNSS uses radio networks to speed satellite positioning fixes."}, {"n": "Real-time kinematic positioning", "u": "/e/satellite-navigation-and-gps/real-time-kinematic-positioning/", "s": "Centimetre-level GNSS correction using carrier-wave phase measurements."}, {"n": "GPS drawing", "u": "/e/satellite-navigation-and-gps/gps-drawing/", "s": "Creating large-scale art by recording GPS-tracked routes."}, {"n": "Precise Point Positioning", "u": "/e/satellite-navigation-and-gps/precise-point-positioning/", "s": "Single-receiver GNSS method achieving centimeter-level positioning accuracy."}, {"n": "Navigation Data Standard", "u": "/e/satellite-navigation-and-gps/navigation-data-standard/", "s": "Standardized binary format for automotive navigation data exchange."}, {"n": "GPS satellite blocks", "u": "/e/satellite-navigation-and-gps/gps-satellite-blocks/", "s": "Generations of GPS satellites, from Block I to Block IIIF."}, {"n": "Joint Precision Airdrop System", "u": "/e/satellite-navigation-and-gps/joint-precision-airdrop-system/", "s": "GPS-guided steerable parachute system for precision military airdrops."}, {"n": "Handheld GPS", "u": "/e/satellite-navigation-and-gps/handheld-gps/", "s": "Portable device combining GPS positioning with navigation functions."}, {"n": "DeLorme", "u": "/e/satellite-navigation-and-gps/delorme/", "s": "GPS and satellite messaging pioneer acquired by Garmin in 2016."}, {"n": "Indian Regional Navigation Satellite System", "u": "/e/satellite-navigation-and-gps/indian-regional-navigation-satellite-system/", "s": "India's autonomous regional satellite navigation system providing PVT services."}, {"n": "2nd Navigation Warfare Squadron", "u": "/e/satellite-navigation-and-gps/2nd-navigation-warfare-squadron/", "s": "United States Space Force unit operating the GPS satellite constellation."}, {"n": "GPS IIR-1", "u": "/e/satellite-navigation-and-gps/gps-iir-1/", "s": "First Block IIR GPS satellite destroyed 13 seconds after launch."}, {"n": "Sony Pyxis", "u": "/e/satellite-navigation-and-gps/sony-pyxis/", "s": "One of the first consumer GPS devices with swappable map databases."}, {"n": "Earth-centered, Earth-fixed coordinate system", "u": "/e/satellite-navigation-and-gps/earth-centered-earth-fixed-coordinate-system/", "s": "A Cartesian system with origin at Earth's center for satellite navigation."}, {"n": "NextNav", "u": "/e/satellite-navigation-and-gps/nextnav/", "s": "Terrestrial positioning network complementing GPS with indoor and altitude capability."}, {"n": "Joint precision approach and landing system", "u": "/e/satellite-navigation-and-gps/joint-precision-approach-and-landing-system/", "s": "Military all-weather precision landing system using differential GPS."}, {"n": "USA-213", "u": "/e/satellite-navigation-and-gps/usa-213/", "s": "First Block IIF GPS satellite, launched on a Delta IV in 2010."}, {"n": "Garmin iQue", "u": "/e/satellite-navigation-and-gps/garmin-ique/", "s": "PDA line with integrated GPS and turn-by-turn navigation."}, {"n": "USA-66", "u": "/e/satellite-navigation-and-gps/usa-66/", "s": "First Block IIA GPS satellite, operated over 25 years."}, {"n": "Lexus Link", "u": "/e/satellite-navigation-and-gps/lexus-link/", "s": "Lexus's subscription-based telematics service launched in 2000."}, {"n": "AN/PSN-13 Defense Advanced GPS Receiver", "u": "/e/satellite-navigation-and-gps/an-psn-13-defense-advanced-gps-receiver/", "s": "Military handheld GPS receiver with encrypted P(Y) code capability."}, {"n": "USA-96", "u": "/e/satellite-navigation-and-gps/usa-96/", "s": "Last Block IIA GPS satellite to be retired."}, {"n": "Navstar 7", "u": "/e/satellite-navigation-and-gps/navstar-7/", "s": "The only Block I GPS satellite lost in a launch failure."}, {"n": "DORIS (satellite system)", "u": "/e/satellite-navigation-and-gps/doris-satellite-system/", "s": "French Doppler-based system for orbit determination and positioning."}, {"n": "USA-92", "u": "/e/satellite-navigation-and-gps/usa-92/", "s": "Twelfth Block IIA GPS satellite, served over 20 years."}, {"n": "USA-126", "u": "/e/satellite-navigation-and-gps/usa-126/", "s": "Seventeenth Block IIA GPS satellite, decommissioned after over 18 years of service."}, {"n": "USA-85", "u": "/e/satellite-navigation-and-gps/usa-85/", "s": "Seventh Block IIA GPS satellite, launched in 1992 and retired in 2008."}, {"n": "USA-84", "u": "/e/satellite-navigation-and-gps/usa-84/", "s": "Sixth Block IIA GPS satellite, served twenty years before disposal."}, {"n": "USA-64", "u": "/e/satellite-navigation-and-gps/usa-64/", "s": "Last Block II GPS satellite launched and retired."}, {"n": "USA-91", "u": "/e/satellite-navigation-and-gps/usa-91/", "s": "Eleventh Block IIA GPS satellite, launched in 1993 and decommissioned in 2007."}, {"n": "USA-117", "u": "/e/satellite-navigation-and-gps/usa-117/", "s": "Sixteenth Block IIA GPS satellite, launched in 1996."}, {"n": "Time to first fix", "u": "/e/satellite-navigation-and-gps/time-to-first-fix/", "s": "Time for a GPS receiver to acquire signals and calculate a fix."}, {"n": "USA-83", "u": "/e/satellite-navigation-and-gps/usa-83/", "s": "Fifth Block IIA GPS satellite, served over 22 years."}, {"n": "MSAT", "u": "/e/satellite-navigation-and-gps/msat/", "s": "Satellite-based mobile telephony service broadcasting CDGPS differential correction signals."}, {"n": "USA-54", "u": "/e/satellite-navigation-and-gps/usa-54/", "s": "Seventh Block II GPS satellite, declared unusable in 1996."}, {"n": "USA-100", "u": "/e/satellite-navigation-and-gps/usa-100/", "s": "Fifteenth Block IIA GPS satellite, launched in 1994."}, {"n": "USA-63", "u": "/e/satellite-navigation-and-gps/usa-63/", "s": "Eighth Block II GPS satellite, operational from 1990 to 2002."}, {"n": "USA-71", "u": "/e/satellite-navigation-and-gps/usa-71/", "s": "Second Block IIA GPS satellite, operational from 1991 to 2011."}, {"n": "USA-135", "u": "/e/satellite-navigation-and-gps/usa-135/", "s": "Last Block IIA GPS satellite, launched in 1997, served until 2019."}, {"n": "USA-80", "u": "/e/satellite-navigation-and-gps/usa-80/", "s": "Fourth Block IIA GPS satellite, launched in 1992 and retired in 1997."}, {"n": "OPS 5114", "u": "/e/satellite-navigation-and-gps/ops-5114/", "s": "Fourth Block I GPS satellite, launched in 1978."}, {"n": "USA-128", "u": "/e/satellite-navigation-and-gps/usa-128/", "s": "Eighteenth Block IIA GPS satellite, decommissioned after nearly 15 years."}, {"n": "USA-87", "u": "/e/satellite-navigation-and-gps/usa-87/", "s": "Eighth Block IIA GPS satellite, launched December 1992."}, {"n": "USA-79", "u": "/e/satellite-navigation-and-gps/usa-79/", "s": "Third Block IIA GPS satellite, operated from 1992 to 2009."}, {"n": "USA-88", "u": "/e/satellite-navigation-and-gps/usa-88/", "s": "Ninth Block IIA GPS satellite, operated in plane B slot 1."}, {"n": "USA-90", "u": "/e/satellite-navigation-and-gps/usa-90/", "s": "Tenth Block IIA GPS satellite, launched in 1993, operated until 2005."}, {"n": "USA-5", "u": "/e/satellite-navigation-and-gps/usa-5/", "s": "Tenth Block I GPS satellite; last Block I decommissioned."}, {"n": "GPS Block IIF", "u": "/e/satellite-navigation-and-gps/gps-block-iif/", "s": "Interim GPS satellites bridging to Block III, final Block II series."}, {"n": "OPS 5111", "u": "/e/satellite-navigation-and-gps/ops-5111/", "s": "First GPS satellite launched, demonstrating navigation feasibility."}, {"n": "USA-1 (satellite)", "u": "/e/satellite-navigation-and-gps/usa-1-satellite/", "s": "First satellite to receive a USA designation."}, {"n": "OPS 5113", "u": "/e/satellite-navigation-and-gps/ops-5113/", "s": "Third Block I GPS satellite, launched 1978, retired 1992."}, {"n": "OPS 5117", "u": "/e/satellite-navigation-and-gps/ops-5117/", "s": "Fifth Block I GPS satellite, launched in 1980."}, {"n": "OPS 5118", "u": "/e/satellite-navigation-and-gps/ops-5118/", "s": "Sixth Block I GPS satellite, launched in 1980."}, {"n": "OPS 9794", "u": "/e/satellite-navigation-and-gps/ops-9794/", "s": "Eighth Block I GPS satellite, launched in 1983."}, {"n": "USA-10", "u": "/e/satellite-navigation-and-gps/usa-10/", "s": "Last of eleven Block I GPS demonstration satellites."}, {"n": "OPS 5112", "u": "/e/satellite-navigation-and-gps/ops-5112/", "s": "Second Block I GPS satellite, launched in 1978."}, {"n": "SiReNT", "u": "/e/satellite-navigation-and-gps/sirent/", "s": "Singapore's official high-precision GPS reference network for cadastral and survey work."}, {"n": "Networked Transport of RTCM via Internet Protocol", "u": "/e/satellite-navigation-and-gps/networked-transport-of-rtcm-via-internet-protocol/", "s": "A protocol for streaming GNSS correction data over the Internet."}, {"n": "OmniSTAR", "u": "/e/satellite-navigation-and-gps/omnistar/", "s": "Proprietary SBAS correction service using geostationary satellites across eight regions."}, {"n": "GPS watch", "u": "/e/satellite-navigation-and-gps/gps-watch/", "s": "A wrist-worn device with integrated GPS for sports and fitness."}, {"n": "USA-38", "u": "/e/satellite-navigation-and-gps/usa-38/", "s": "Second operational Block II GPS satellite, launched June 1989."}, {"n": "USA-203", "u": "/e/satellite-navigation-and-gps/usa-203/", "s": "A GPS satellite rendered non-operational by a signal filter anomaly."}, {"n": "USA-49", "u": "/e/satellite-navigation-and-gps/usa-49/", "s": "Fifth Block II GPS satellite, operational from 1989 to 2005."}, {"n": "USA-47", "u": "/e/satellite-navigation-and-gps/usa-47/", "s": "Fourth Block II GPS satellite, operational from 1989 to 2001."}, {"n": "Shadow Matching", "u": "/e/satellite-navigation-and-gps/shadow-matching/", "s": "Improves GNSS positioning accuracy in urban canyons using building shadows."}, {"n": "Precision Lightweight GPS Receiver", "u": "/e/satellite-navigation-and-gps/precision-lightweight-gps-receiver/", "s": "Ruggedized hand-held GPS receiver for the U.S. military."}, {"n": "USA-42", "u": "/e/satellite-navigation-and-gps/usa-42/", "s": "Third Block II GPS satellite, operational from 1989 to 2000."}, {"n": "USA-50", "u": "/e/satellite-navigation-and-gps/usa-50/", "s": "Sixth Block II GPS satellite, operational from 1990 to 2000."}, {"n": "LRK", "u": "/e/satellite-navigation-and-gps/lrk/", "s": "Dual-frequency GPS kinematic method enabling centimetre accuracy at long range."}, {"n": "USA-206", "u": "/e/satellite-navigation-and-gps/usa-206/", "s": "Last Block IIR GPS satellite and final Delta II GPS launch."}, {"n": "USA-145", "u": "/e/satellite-navigation-and-gps/usa-145/", "s": "Third Block IIR GPS satellite, launched in 1999 and still operational."}, {"n": "GPS·C", "u": "/e/satellite-navigation-and-gps/gps-c/", "s": "Differential GPS correction service for Canada, discontinued in 2011."}, {"n": "USA-581", "u": "/e/satellite-navigation-and-gps/usa-581/", "s": "Ninth GPS Block III satellite, first with laser retroreflector array."}, {"n": "SPOT Satellite Messenger", "u": "/e/satellite-navigation-and-gps/spot-satellite-messenger/", "s": "GPS tracking and messaging via Globalstar satellite network."}, {"n": "USA-151", "u": "/e/satellite-navigation-and-gps/usa-151/", "s": "Fifth Block IIR GPS satellite, reactivated multiple times after initial retirement."}, {"n": "USA-35", "u": "/e/satellite-navigation-and-gps/usa-35/", "s": "First operational Block II GPS satellite, launched on maiden Delta II flight."}, {"n": "USA-289", "u": "/e/satellite-navigation-and-gps/usa-289/", "s": "First GPS Block III satellite, heaviest GPS satellite launched."}, {"n": "USA-166", "u": "/e/satellite-navigation-and-gps/usa-166/", "s": "Eighth Block IIR GPS satellite, launched in 2003, still operational."}, {"n": "USA-150", "u": "/e/satellite-navigation-and-gps/usa-150/", "s": "Fourth Block IIR GPS satellite, replaced the first operational GPS satellite."}]