Luo Ai-min

Fractal detection of radar weak targets

Radar weak target detection is a very difficult problem. The fractal information of radar targets may provide a new way to enhance the performance of conventional detection methods. A new approach to detect ship targets from sea clutter has been developed. The approach is based on the use of the fractal signature difference between the ship target and sea clutter, which is manifested in the backscattered radar signal from different objects. The fractal signatures are estimated by using the box counting method. In the case of a small number of sampling points, the computation of the fractal dimensions is considered.

Impulsive noise suppression using morphological operators

A new approach to impulsive noise suppression found in desired signals is presented using mathematical morphological operators that incorporate the shape information of the signal in this paper. A brief introduction to these nonlinear signal processing operators, as well as a detailed description of the new algorithm, is presented. Experimental results show that the new algorithm has good performance in impulsive noise suppression.

Entropy-Based Complexity Analysis for Architecture of Information System

The complexity of information system architecture is a key factor which impresses the development of information system. Firstly, the features of systems interface description are analyzed, which is a product of system view of DoD Architecture Framework, then based on the product of systems interface description, the fundamental models of systems and interfaces are established. According to the basic structure of systems and interfaces, the entropy-based complexity analysis method on architecture of information system is provided in the paper. Finally, a concrete example is given to expatiate on the method.

An Evolution Method of Service View Products Supported Dynamic Integration of Information Resources

The original information system architecture Framework provides an integration mechanism of information system resources to support a specific operational mission, but it is difficult to describe and analyze the dynamic integration process of the information system resources to support the dynamic adjustment of operational mission in the future complex, changeable environment. This paper presents the modeling approach of the service view product, and focus on the evolution method of service view products to support the dynamic integration process of the information system resources.