TABLE 12

Error budget of the maximum steady-state true navigation error 1σ std. deviation. For a rotating s/c in Polar LEO orbit, with 3 accel., 0.5 m baseline length, large time constant, & high cost model

State nameTotal steady-state true navigation error 1σError source 1Error source 2Error source 3Units
Spacecraft Position Magnitude77.54Accelerometer Error - 69.63Accelerometer Position - 28.61Star Camera Noise - 11.69m
Spacecraft Velocity Magnitude0.08Accelerometer Error - 0.07Accelerometer Position - 0.03Star Camera Noise - 0.01m/s
Spacecraft Attitude Magnitude6.0128 × 10−6Star Camera Noise - 5.0169 × 10−6Accelerometer Error - 2.5929 × 10−6Accelerometer Position - 1.7653 × 10−6rad
Spacecraft Angular Velocity Magnitude6.3451 × 10−8Rotational Process Noise - 5.5115 × 10−8Accelerometer Error - 2.0514 × 10−8Accelerometer Position - 1.7138 × 10−8rad/s