Precision Differential GPS

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Precision Differential GPS
Base-small.png
Founder:
skirit
Coops:
lnovy,nio
HW License:
GPL
Status:
active
Created:
2020-11-05
Last Modified:
2021-01-11

Goal of a project

Theory

wikipedia: Differential GPS

sw for experimentation

Receive GPS signals using SDR and do custom calculations: https://gnss-sdr.org/

hw for experimentation

limeSDR mini 1 RX input 1 TX output SDR (nio has 1): LimeSDR Mini from limemicro.com

Cheap ceramic active antenna (nio has 1): ebay 28dB LNA Gain 1575 42MHz Male SMA Male GPS Active Antenna Stronger Singal NEW

Cheap bias tee to insert power to active antenna coax feed (nio has 1): 6GHz 10MHz-6000MHz Wideband Amplifier Broadband RF Feeder RF Isolator Bias Tee

Filter out noise using bandpass filter to allow SDR to receive GPS signal: Tindie - 1575 MHz GPS L1 Bandpass Filter Band Pass, by GPIO Labs

Other RF pages to read

Active_GPS_antenna_from_ebay

ideas to evaluate

  • calculate corrections for individual sattelite pseudoranges

URL's to explore

simple gps receiver calculation

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