Table 3 Comparison of classical and quantum sensors
From: Cold atoms in space: community workshop summary and proposed road-map
Atomic accelerometer | Electrostatic accelerometer | |
|---|---|---|
Sensitivity | 4 × 10−8 m/s2/Hz\(^{1/2}\) on ground (projection for space at 10−12 m/s2/Hz\(^{1/2}\) for interrogations of more than \(20~\text{s}\)) | 3 × 10−12 m/s2/Hz\(^{1/2}\) (demonstrated) |
Measurement bandwidth | ≤0.1 Hz | [0.005–0.1] Hz |
Scale factor | Absolute | Calibration required |
Stability | No drift | Drift |
Measurement capability | Single axis | Three axes |
Proof mass motion | Residual velocities → Coriolis acceleration | |
SWaP | High | Low |
TRL | Intermediate | High |