5.8 The First Space Flight Test and Its Results
395
Fig. 5.40 The fitted phase residuals before and after the glitch
sequences, the autonomous orbit determination algorithm based on the extended
Kalman filtering is often divergent. For this reason, an autonomous orbit determination algorithm based on normal plane constraints was proposed by the research
team of the CAST [42], as shown in Fig. 5.41. The so-called normal plane refers to
the plane perpendicular to the direction vector of the pulsar. The basic ideal of this
algorithm is that the satellite’s orbit must pass through the normal plane, which is
Fig. 5.41 Principle of orbit determination based on normal plane constraints
395
Fig. 5.40 The fitted phase residuals before and after the glitch
sequences, the autonomous orbit determination algorithm based on the extended
Kalman filtering is often divergent. For this reason, an autonomous orbit determination algorithm based on normal plane constraints was proposed by the research
team of the CAST [42], as shown in Fig. 5.41. The so-called normal plane refers to
the plane perpendicular to the direction vector of the pulsar. The basic ideal of this
algorithm is that the satellite’s orbit must pass through the normal plane, which is
Fig. 5.41 Principle of orbit determination based on normal plane constraints