To the poleorbit micro-satellite, this paper provides a modified EKF arithmetic based on magnetometer individually.
针对极轨微小卫星，提出了一种基于磁强计的改进EKF算法。
2
The Cassini spacecraft brought a disk of signatures into orbit around Saturn. The Phoenix Mars Lander took DVD to Mars' North Pole.
卡西尼号将一张储存有签名的DVD带到了土星轨道上，凤凰号火星探测器将一张DVD带到了火星的北极。
3
Once it reaches Jupiter, Juno will orbit the planet's pole taking measurements that will provide insight into Jupiter's origin, structure, atmosphere and magnetosphere.