Table 6. Correlation between static horizontal position accuracy (as expressed by the root mean squared error of 30 samples) and other metrics of interest when using the Flint GNSS receiver in the deciduous stand.
Status / Metric | Holding position | |||||
---|---|---|---|---|---|---|
Vertical | Angled | Horizontal | ||||
r | p-value | r | p-value | r | p-value | |
Leaf-on conditions | ||||||
HDOP a | 0.019 | 0.919 | -0.127 | 0.503 | -0.206 | 0.275 |
VDOP b | 0.025 | 0.895 | 0.069 | 0.718 | 0.114 | 0.548 |
PDOP c | 0.024 | 0.900 | 0.007 | 0.971 | 0.061 | 0.749 |
Satellites used | -0.234 | 0.213 | -0.156 | 0.410 | -0.087 | 0.649 |
C/No d | -0.010 | 0.959 | -0.237 | 0.207 | 0.038 | 0.843 |
Air temperature | -0.121 | 0.524 | -0.328 * | 0.077 | -0.143 | 0.450 |
Relative humidity | 0.157 | 0.408 | -0.213 | 0.257 | 0.401 ** | 0.028 |
Atmospheric pressure | 0.143 | 0.452 | 0.154 | 0.417 | 0.074 | 0.696 |
Leaf-off conditions | ||||||
HDOP a | 0.025 | 0.895 | 0.060 | 0.752 | 0.143 | 0.449 |
VDOP b | -0.333 * | 0.072 | 0.066 | 0.727 | -0.194 | 0.304 |
PDOP c | -0.262 | 0.162 | 0.063 | 0.741 | -0.085 | 0.655 |
Satellites used | -0.007 | 0.970 | -0.042 | 0.826 | 0.227 | 0.229 |
C/No d | -0.267 | 0.154 | -0.145 | 0.444 | -0.285 | 0.127 |
Air temperature | 0.058 | 0.762 | 0.137 | 0.470 | 0.161 | 0.395 |
Relative humidity | 0.032 | 0.866 | -0.143 | 0.452 | -0.323 * | 0.082 |
Atmospheric pressure | -0.359 * | 0.051 | -0.064 | 0.736 | -0.223 | 0.236 |
** Significant at p < 0.05 level
* Significant at p < 0.10 level
a Horizontal dilution of precision
b Vertical dilution of precision
c Positional dilution of precision
d Carrier-to-noise density