Abstract-This paper describes a novel 3 dimensional color measurement system. After 3 kinds of geometrical features are analyzed, the line features were selected. A calibration board with right-angled triangle outline was designed to improve the calibration precision. For this system, two algorithms are presented. One is the calibration algorithm between 2 dimensional laser range finder (2D LRF), while the other is for 2D LRF and the color camera. The result parameters were obtained through solving the constrain equations by the correspond data between the 2D LRF and other two sensors. The 3D color reconstruction experiments of real data prove the effectiveness and the efficient of the system and the algorithms.
Cluster of formation flying satellites consists of several companion satellites that make relative motion to a central satellite. The trajectory of relative motion is ellipse with special properties. On secular flying of formation satellites, various perturbation factors may cause relative drifts to the satellites. J 2 perturbation has a great effect on the satellites formation flying. The article addresses a linearized relative motion equation. Considering the impact of the J 2 perturbation on secular drift of relative motion, An relative motion model of elliptical reference orbit is developed. The simulation results show that the equation can predict the relative motion of satellite formation flying precisely. S 978-1-4244-4775-6/09/$25.00
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.