Inside GNSS Media & Research

JUL-AUG 2018

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56 Inside GNSS J U L Y / A U G U S T 2 0 1 8 www.insidegnss.com WORKING PAPERS FIGURE 9 GPS L1 C/A position solution using the GNSS-SDR software receiver under RFI GPST (s) 5.152 5.1516 5.1524 5.1528 5.1532 5.152 5.1516 5.1524 5.1528 5.1532 5.152 5.1516 5.1524 5.1528 5.1532 5.152 5.1516 5.1524 5.1528 5.1532 ECEF X (m) ×10 5 –1.28812 –1.2814 –1.28816 –1.2818 –1.2882 ×10 6 ECEF Y (m) –4.72074 –4.72075 –4.72076 –4.72077 –4.72078 –4.72079 –4.7208 –4.72081 ×10 6 GPST (s) ECEF Y (m) ×10 5 –4.718 –4.719 –4.720 –4.721 –4.722 –4.723 ×10 6 GPST (s) ECEF Z (m) ×10 5 4.081 4.08 4.079 ×10 6 ECEF X (m) –1.2882 North (m) 40 30 20 10 5 0 –5 –10 –20 –30 –40 East (m) –60 –40 –20 0 20 4 0 6 0 –1.28818 –1.28816 –1.28814 –1.28812 ×10 6 GPST (s) dt (m) ×10 5 –1.65 –1.7 –1.75 –1.8 Num Obs 14 12 10 8 6 4 ×10 -4 FIGURE 10 Combined GPS L1 C/A with GLONASS L1 C/A position solution using the GNSS-SDR software receiver GPST (s) 5.152 5.1518 5.1522 5.1524 5.1526 5.152 5.1518 5.1522 5.1524 5.1526 5.152 5.1518 5.1522 5.1524 5.1526 5.152 5.1518 5.1522 5.1524 5.1526 ECEF X (m) ×10 5 –1.287 –1.288 –1.289 ×10 6 ECEF Y (m) –4.72074 –4.72076 –4.72078 –4.7208 –4.72082 –4.72084 –4.72086 –4.72088 –4.7209 –4.72092 ×10 6 GPST (s) ECEF Y (m) ×10 5 –4.71 –4.715 –4.72 –4.725 –4.722 –4.723 ×10 6 GPST (s) ECEF Z (m) ×10 5 4.09 4.08 4.07 ×10 6 ECEF X (m) –1.2883 North (m) 20 15 10 5 0 –5 –10 –15 East (m) –25 –20 –10 –5 –15 0 5 10 15 20 25 –1.28825 –1.2882 –1.28815 –1.2881 –1.28805 ×10 6 GPST (s) dt (m) ×10 5 0.08 0.06 0.04 0.02 0 –0.02 Num Obs 14 12 10 8 6 4

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