In this paper, the architecture of the system effectiveness is put forward and methods for assessing the effectiveness of the space-based electro-optical imaging system are focused on. And then, we consider a certain scenario, in which a missile aided by an the space-based electro-optical imaging system attacks a ground-based target. The effectiveness evaluation model of the space-based electro-optical imaging system is built. It is important for us to study and analyze effectiveness system of the space-based electro-optical imaging system in attack-defense confrontation. The models can be used to analysis design, evaluating and development of space-based system.
Direct collocation method has been widely used for trajectory optimization. In this paper, the application of direct
optimization method (direct collocation method & nonlinear programming (NLP)) to lunar probe soft-landing trajectory
optimization is introduced. Firstly, the model of trajectory optimization control problem to lunar probe soft landing
trajectory is established and the equations of motion are simplified respectively based on some reasonable hypotheses.
Performance is selected to minimize the fuel consumption. The control variables are thrust attack angle and thrust of
engine. Terminal state variable constraints are velocity and altitude constraints. Then, the optimal control problem is
transformed into nonlinear programming problem using direct collocation method. The state variables and control
variables are selected as optimal parameters at all nodes and collocation nodes. Parameter optimization problem is solved
using the SNOPT software package. The simulation results demonstrate that the direct collocation method is not
sensitive to lunar soft landing initial conditions; they also show that the optimal solutions of trajectory optimization
problem are fairly good in real-time. Therefore, the direct collocation method is a viable approach to lunar probe soft
landing trajectory optimization problem.
As an important part of operational effectiveness analysis of space-based system, the research on operational
effectiveness of electro-optical imaging reconnaissance satellite has great academic and realistic significance. In this
paper, we consider a certain scenario, in which a missile aided with an electro-optical imaging reconnaissance satellite
attacks a ground-based target. The operational effectiveness analysis and evaluating model of electro-optical imaging
reconnaissance satellite is built. The results of simulation demonstrate that operational effectiveness analysis and
evaluating model of electro-optical imaging reconnaissance satellite is feasible and reasonable. The models can be used
to analysis design, evaluating and development of space-based.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.