This paper considers the radar scenes which contain numerous rapidly changing terrains, i.e., there are more than one clutter-edge in the environment. This kind of radar scenes incurs sharply degradation in the performance of the present adaptive constant false alarm rate (CFAR) detectors as the statistical characteristic of reference cells is highly heterogeneous. To solve this problem, we pro...

In this paper a technique of Hough detector threshold procedure for moving target detection under conditions of randomly arriving impulse interference with a Poisson distributed flow and Raleigh amplitude distribution is proposed. The expressions of detection and false alarm probability are derived for a highly fluctuating Swerling II target. A comparative analysis of the performance of a Hough...

Detecting remote targets is important to active protection system (APS) or infrared search and track (IRST) applications. In normal situation, the well-known constant false alarm rate (CFAR) detector works properly. However, decoys in APS or closely spaced targets in IRST degrade the detection capability by increasing background noise level in the CFAR detector. This paper presents a context aw...

This paper describes an improved Constant False Alarm Rate (CFAR) ship detection algorithm in spaceborne synthetic aperture radar (SAR) image based on Alphastable distribution model. Typically, the CFAR algorithm uses the Gaussian distribution model to describe statistical characteristics of a SAR image background clutter. However, the Gaussian distribution is only valid for multilook SAR image...

An adaptive threshold with constant false alarm rate (CFAR) property is proposed to be used in a channelized electronic support measures (ESM) system with logarithmic video ampli'cation. For this purpose, two CFAR processors are designed which are in fact modi'ed excision (MEx) and adaptive MEx (AMEx) processors, previously presented by authors, but modi'ed for the logarithmic ampli'cation case...

In this paper, we present a configurable FPGA-based hardware architecture for adaptive processing of noisy signals for target detection based on Constant False Alarm Rate (CFAR) algorithms. The architecture has been designed to deal with parallel processing and to be configured for three versions of CFAR algorithms, the Cell-Average, the Max and the Min CFAR. The proposed pipelined architecture...

The Pareto distribution has been validated recently as a model for X-band high resolution maritime surveillance radar clutter returns. As such, coherent and incoherent detection schemes have begun to appear in the literature. Consequently, constant false alarm rate (CFAR) detectors have also been explored in recent work. This paper introduces some new detectors, designed to manage issues associ...

Potato common scab is an economically important crop disease that is characterized by the formation of superficial, raised or pitted lesions on the potato tuber surface. The most widely distributed causative agent of the disease is Streptomyces scabies, which produces the phytotoxic secondary metabolite thaxtomin A that serves as a key virulence factor for the organism. Recently, it was demonst...