Research Article

Mars Atmospheric Entry Integrated Navigation with Partial Intermittent Measurements

Table 2

Initial conditions and parameters during Mars entry.

Initial parametersValuesStandard deviation

Altitude 3522.20 km1 km
Velocity 5900 m/s20 m/s
FPA −16 deg0.5 deg
Longitude 0.00 deg0.02 deg
Latitude 0.00 deg0.02 deg
Azimuth 5.156 deg0.5 deg
Reference density 2.0 × 10−4 kg/m32 × 10−5 kg/m3
L/D ratio0.1560.016
Ballistic coefficient 0.016m2/kg0.0016m2/kg