Table 3. Accelerometer calibration parameters: estimated by POD vs. advertised.
From: Thermospheric density and wind retrieval from Swarm observations
Satellite | Date | Bias (nm/s2) | Scale factor | ||
|---|---|---|---|---|---|
Advertised | Estimated | Advertised | Estimated | ||
X axis | |||||
GRACE-A | 7 Nov. | −1130 | −1127 | 0.960 | 0.962 |
8 Nov. | −1130 | −1122 | 0.960 | 0.958 | |
GRACE-B | 7 Nov. | −553 | −557 | 0.960 | 0.944 |
8 Nov. | −553 | −561 | 0.960 | 0.951 | |
CHAMP | 7 Nov. | −2961 | −2964 | 0.834 | 0.850 |
8 Nov. | −2961 | −2947 | 0.834 | 0.844 | |
Y axis | |||||
GRACE-A | 7 Nov. | 28227 | 27940 | 0.980 | 0.979 |
8 Nov. | 28225 | 27964 | 0.980 | 0.980 | |
GRACE-B | 7 Nov. | 8689 | 9175 | 0.970 | 0.972 |
8 Nov. | 8690 | 9173 | 0.970 | 0.971 | |
CHAMP | 7 Nov. | 376 | 265 | 0.800 | 0.803 |
8 Nov. | 376 | 242 | 0.800 | 0.801 | |
Z axis1 | |||||
GRACE-A | 7 Nov. | −500 | −372 | 0.940 | 0.940 |
8 Nov. | −500 | −365 | 0.940 | 0.940 | |
GRACE-B | 7 Nov. | −775 | −630 | 0.920 | 0.920 |
8 Nov. | −775 | −665 | 0.920 | 0.920 | |
CHAMP2 | N/A | N/A | N/A | N/A | N/A |