• Thumbnail for GPS signals
    GPS signals are broadcast by Global Positioning System satellites to enable satellite navigation. Receivers on or near the Earth's surface can determine...
    75 KB (10,648 words) - 23:39, 1 November 2024
  • Thumbnail for Global Positioning System
    the weak GPS signal. GPS's vulnerability to jamming is a threat that continues to grow as jamming equipment and experience grows. GPS signals have been reported...
    180 KB (18,773 words) - 09:35, 5 November 2024
  • Thumbnail for Error analysis for the Global Positioning System
    position. Since GPS signals at terrestrial receivers tend to be relatively weak, natural radio signals or scattering of the GPS signals can desensitize...
    37 KB (5,015 words) - 13:06, 27 August 2024
  • Thumbnail for GPS satellite blocks
    launch was on 5 February 2016. GPS Block III is the first series of third-generation GPS satellites, incorporating new signals and broadcasting at higher...
    16 KB (1,557 words) - 19:03, 1 November 2024
  • Thumbnail for Differential GPS
    When GPS was first being put into service, the US military was concerned about the possibility of enemy forces using the globally available GPS signals to...
    26 KB (2,911 words) - 00:09, 7 September 2024
  • Thumbnail for GPS Block III
    inside the spot beam, the GPS satellite will appear as two GPS signals occupying the same position. While the full-Earth M-code signal is available on the Block...
    48 KB (4,754 words) - 18:56, 2 November 2024
  • Thumbnail for Radio clock
    Radio clock (redirect from GPS clock)
    satellite signals. Dedicated GPS timing receivers are accurate to better than 1 microsecond; however, general-purpose or consumer grade GPS may have an...
    49 KB (3,045 words) - 11:14, 15 August 2024
  • Thumbnail for GPS disciplined oscillator
    agree with the signals broadcast by GPS or other GNSS satellites. GPSDOs work well as a source of timing because the satellite time signals must be accurate...
    10 KB (1,057 words) - 07:43, 3 June 2024
  • Thumbnail for Satellite navigation device
    Outdoors, GPS signals are typically around the −155 dBW level (−125 dBm). Conventional GPS receivers integrate the received GPS signals for the same...
    40 KB (4,396 words) - 02:18, 26 October 2024
  • Spoofing attack (redirect from GPS spoofing)
    implemented in sensors. Use more GNSS signal types. Modernized civil GPS signals are more robust than the L1 signal and should be leveraged for increased...
    32 KB (3,757 words) - 12:08, 3 September 2024
  • GLONASS (redirect from GLONASS signals)
    navigation signals to improve the system's accuracy — including new CDMA signals in the L3 and L5 bands, which will use modulation similar to modernized GPS, Galileo...
    71 KB (6,187 words) - 16:45, 21 October 2024
  • Thumbnail for AN/PSN-13 Defense Advanced GPS Receiver
    has the security hardware necessary to decode the encrypted P(Y)-code GPS signals. Manufactured by Rockwell Collins, the DAGR entered production in March...
    4 KB (382 words) - 18:53, 11 August 2024
  • Thumbnail for Galileo (satellite navigation)
    Galileo signals without also interfering with its own GPS signals.[citation needed] The US did not want to lose their GNSS capability with GPS while denying...
    108 KB (10,782 words) - 05:13, 2 November 2024
  • Thumbnail for Wide Area Augmentation System
    contain an L1 & L5 GPS payload. This means they will potentially be usable with the L5 modernized GPS signals when the new signals and receivers become...
    42 KB (4,018 words) - 08:47, 20 September 2024
  • Thumbnail for Assisted GNSS
    Assisted GNSS (redirect from A-GPS)
    exceptionally poor signal conditions, for example in urban areas, satellite signals may exhibit multipath propagation where signals skip off structures...
    10 KB (1,358 words) - 14:08, 18 August 2024
  • individual signals collected and integrated by the receiver units employed in a Global Navigation Satellite System (GNSS). The integrity of received signals and...
    10 KB (1,477 words) - 10:47, 22 February 2024
  • using GPS tracking software and devices with GPS capability. A GPS "track me" essentially contains a GPS module that receives the GPS signal and calculates...
    33 KB (4,180 words) - 19:26, 13 September 2024
  • Thumbnail for GPS week number rollover
    Structure of the time-encoding components of GPS signals, NAV and CNAV versions "Advisory for the August 1999 GPS Week Rollover". www.navcen.uscg.gov. Retrieved...
    8 KB (822 words) - 16:12, 17 September 2024
  • encrypted military M-code GPS signaling to ensure that the JDAM only accepts signals with correct encryption and rejects all other signals. However, according...
    76 KB (6,688 words) - 02:13, 5 November 2024
  • EGPS, EGPS, trademarked as eGPS) is a technology designed for mobile phones on GSM and W-CDMA networks, to augment GPS signals to deliver faster location...
    3 KB (356 words) - 12:27, 1 March 2021
  • Thumbnail for R-330Zh Zhitel
    paper notes that the Russian R-330Zh Zhitel impacted GPS signals that JDAMs rely on. Some GPS signals are weak with some having "travelled up to 10,900 nautical...
    12 KB (1,184 words) - 12:57, 5 December 2023
  • Thumbnail for GNSS reflectometry
    the Earth of navigation signals from Global Navigation Satellite Systems such as GPS. The idea of using reflected GNSS signals for earth observation was...
    10 KB (1,149 words) - 03:40, 2 October 2024
  • Thumbnail for Inertial measurement unit
    developments allow for the production of IMU-enabled GPS devices. An IMU allows a GPS receiver to work when GPS-signals are unavailable, such as in tunnels, inside...
    18 KB (2,120 words) - 19:59, 5 November 2024
  • GPS/INS is the use of GPS satellite signals to correct or calibrate a solution from an inertial navigation system (INS). The method is applicable for...
    8 KB (1,037 words) - 18:11, 16 October 2024
  • GPS Block IIIF, or GPS III Follow On (GPS IIIF), is the second set of GPS Block III satellites, consisting of up to 22 space vehicles. The United States...
    39 KB (3,067 words) - 18:00, 5 November 2024
  • Thumbnail for Satellite navigation
    receivers, the position of the signal moves as signals are received from several satellites. In addition, the radio signals slow slightly as they pass through...
    43 KB (4,436 words) - 17:40, 3 November 2024
  • A distress signal, also known as a distress call, is an internationally recognized means for obtaining help. Distress signals are communicated by transmitting...
    18 KB (2,193 words) - 04:47, 6 November 2024
  • Thumbnail for SiRF
    controllers integrated with low-noise radio receivers to decode GPS signals at very low signal levels (typically -160dBm). SiRF chips also support SBAS to...
    5 KB (448 words) - 06:40, 24 August 2024
  • Thumbnail for Local-area augmentation system
    Data Link. A receiver on an aircraft uses this information to correct GPS signals, which then provides a standard instrument landing system (ILS)-style...
    12 KB (1,415 words) - 04:32, 6 March 2024
  • GPS meteorology refers to the use of the effect of the atmosphere on the propagation of the Global Positioning System's (GPS) radio signals to derive...
    3 KB (473 words) - 17:45, 9 October 2017