Commercial Cameras Accurate Focal Length Estimation for Satellite Optical Observation
Journal Title: International Journal of Aeronautical Science & Aerospace Research - Year 2015, Vol 2, Issue 4
Abstract
Spacecraft orbit estimation based on optical observations captured by a commercial camera is considered to be a challenge. Camera focal length turned out to be a parameter of utmost importance. The main goal of this work is to develop different algorithms able to estimate the focal length of a commercial camera based on actual measurements (observations). Thirteen different algorithms, including different Kalman Filters, Genetic Algorithms, and Simulated Annealing, and three different cameras are used in this study. The results of these algorithms are compared in order to measure their efficiency and determine the best way to compute the focal length. It is found that the best performance (in terms of the selected cost function) is achieved by genetic algorithms. Estimation algorithms such as Kalman filters are useful when there is a large ambiguity associated with the value of camera focal length. The graphical solution is characterized by simplicity and relatively good performance.
Authors and Affiliations
Tamer Mekky Ahmed
Keywords
Related Articles
- EP ID EP205461
- DOI 10.19070/2470-4415-150006
- Views 86
- Downloads 0
Dynamic Analysis of Nonlinear Stochastic Systems by Polynomial Chaos Expansion (PCE)
This paper deals with the analysis of the dynamic behavior of nonlinear systems subject to probabilistic uncertainties in the physical parameters. The Polynomial Chaos Expansion PCE is proposed to resolve this problem. T...
UAV Flight Dynamics
In the interest of promoting the integration of hybrid-electric power train into the aviation industry, research is being conducted by North Carolina State University to establish the feasibility of electrified power tra...
Universal Concept of Self-Synchronization of the Micro/Nano- Structures of the Energetic Materials Reactionary Zones and Micro-Scale Combustion Mechanisms
Presented research is devoted to further development of ideas of famous Russian scientist Ya.B. Zeldovich in the new area of physics - the physics of self-organizing systems in the active medium. According our hypothesis...
Detecting Low-Velocity Impact Damage in Composite Plates via a Minimization of Measured and Simulated Origin Approach
In this paper, a new method for identifying impact locations applying a comparative simulated approach of minimization of measurement error against simulated data in a composite carbon plate-like structure using acoustic...
Asymmetric and Unsteady Flow Separation in High Mach Number Planar Nozzles
This paper presents numerical and experimental findings regarding flow separation phenomenon in a high Mach number over expanded planar nozzle. The experimental work is done using a tapered nozzle with a variable area ra...