Deployment research of multi-tethered InSAR system for GMTI mission

This paper investigates the deployment of multi-tethered InSAR system applied in GMTI missions. Since the baselines for GMTI are usually short, the tethers whose length is almost identical to the baselines are short as well. As a consequence, the deploy mechanism should not work under this condition to avoid the unsuccessful deployment caused by the output error of the mechanism. Hence, the free deployment method is chosen. Additionally, the horizontal distribution of system is not stable. The time and energy cost of the deployment is determined by the initial in-plane angles. Hence the initial parameters of deployment are optimized to deploy the system along horizontal quickly. Subsequently, a pulse control method is used to make the system stay around the horizontal direction. Finally, numerical simulation is carried out to validate the optimization and control methods.