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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 … Read more
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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 … Read more
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Why three or more satellite needed? GPS error.
Why three or more satellite needed? GPS error. Why three or more satellite needed?GPS works on Principle of range measurement.Range measured by GPS receiver is not true range but pseudo range. Pseudo range contain user clock error.If exact time is known then,Only one range will give spherical shell of position. But two range intersection will … Read more
