This paper investigates independence of classifiers in neural networks for high range resolution radar target recognition. Independent classifiers are used to select distinguishing features for synthesis of ontogenic neural networks (networks that generate their own topology during training). A class of nonorthogonal classifiers is defined and their classification properties are investigated. R...

A new behavioural model of a power amplifier (PA) at system level is presented, dedicated to radar applications. This model, which is able to take into account output loading impedance mismatch, is based on a similar topology to the PA's circuit. The model, implemented in Agilent Advanced Design System (ADS), is validated for different loading impedances, until VSWR ¼ 2 (voltage standing wave r...

Since its discovery, in the 1940’s, radar (Radio Detection and Ranging) has become an important ranging sensor in many areas of technology and science. Most of the military and many civilian applications are unimaginable today without radar. With technology development, radar application areas have become larger and more available. One of these applications is Synthetic Aperture Radar (SAR), wh...

Background: Effect of electromagnetic and radiofrequency fields on human health is not well understood, a concern is its effect on male infertility. With the increased use of modern technology, issue of protection against this fields has great importance. infertility is the problem to follow psychological - social consequences. The most common cause of infertility are: male factor, female facto...

ground penetrating radar (gpr) and magnetic methods were used at ghasr-e-shirin town in kermanshah province, southwest of iran for detecting a series of large ancient (ca 1500 years) underground cavities (tagh). the area of study is a historical monument which is named as emarat e khosro. radar and total intensity magnetic field measurements have been done on the eastern part of the complex, wh...

The scattering properties of a radar target can only be fully characterized by measuring a scattering matrix in which the elements represent the combinations of transmit and receive polarization states. The amount of information gathered by a traditional single polarization radar may therefore be even very limited, for example when the single polarization response is near zero while the cross p...

background there is significant prevalence of physical injuries sustained by civilian recruits at military training garrisons. civilian recruits sustain these injuries mostly during the intensive and rigorous military combat-training period. objectives we sought to determine the prevalence and causes of oral and maxillofacial injuries as the first step in reducing and preventing them in civilia...

Wireless spectrum is a limited resource, and the rapid increase in demand for wireless communication-based services increasing day by day. Hence, maintaining good quality of service, high data rate, reliability need Thus, we to apportion available an efficient manner. Dual-Function Radar Communication (DFRC) emerging field bears vital importance both civil military applications last few years. ...

see through the wall radar, is a relatively new small range radar that uses electromagnetic waves to detect targets behind wall. because of its symmetry, a conducting sphere is often used as a reference scatterer to calibrate radars. in this paper, to simulate received signal for see through the wall radar, scattering model of a conducting sphere in free space is presented. then using a dielect...