Get the latest Science News and Discoveries

Orbit determination and thrust estimation for noncooperative target using angle-only measurement - EurekAlert

With the development of satellite miniaturization, intelligence, and clustering, a single satellite platform can no longer support high-power detection equipment. Monocular angle-only cameras have become standard detection devices for satellites due to their low power consumption, high reliability, and long detection range. In the context of space confrontation, the requirement for target maneuvering recognition necessitates that the filter can accurately and quickly track the target. However, due to the limitations of observability, a single satellite can only measure angles and cannot fully achieve precise tracking and estimation of the maneuvering spacecraft's acceleration. A dual-satellite angle-only observation system and the Interactive Multiple Model (IMM) algorithm are effective methods to improve the overall system observability to meet the requirements of long-distance tracking and acceleration estimation of maneuvering spacecraft. However, traditional IMM algorithms have shortcomings such as poor steady-state tracking accuracy, strong dependence on sub-filter parameter selection, model mismatches, and the inability to determine the motion of the target spacecraft.  

None

Get the Android app