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  • Principle, Segment, Limitation, Error of GPS, DGPS, GLONASS, GALILEO

    Principle, Segment, Limitation, Error of GPS, DGPS, GLONASS, GALILEO GPS principleSame as why three or four satellite using. See above answer. GPS limitationGPS doesn’t work on some places because of inclination of 55 degree to equatorNo control by userGPS jammingGPS error GPS segmentGround base segmentSpace segmentReceiver segment GPS27 satellite 24 operation 3 spare6 orbit20200 km…


  • GPS jamming, Spoofing, SBAS, GNSS

    GPS jamming, Spoofing, SBAS, GNSS GPS jammingGPS jammer intentionally transmitting same band radio wave to block user GPS receiver.GPS jammer can interfere within 200nm. SpoofingWhen GPS receiver give wrong position due to jamming then it is called spoofing. Spoofing threaten navigation. Solar flareSolar flare is simply large explosion from the sun. Due to this GPS…