Practical Implementation of the E-Pulse Technique on the Original Antiquates

Abstract

This paper presents a novel security system for identifying original antiquates from the false ones in the Egyptian museums. Egypt has more than one third of the ancient antiquates in the world so the need for securing such a wealth is considered a national demand. The system depends on transmitting a wide band incident wave on the statue under investigation and by capturing the backscattered signal, an identification algorithm is applied. The system consists of two ultra-wide band horn antennas connected to two ports of a vector network analyzer where the object and the two antennas are surrounded by absorbing materials. One port is used as a transmitter while the other is used as a receiver. The E-pulse technique is applied for the discrimination between the original and the false antiquates. The E-pulse technique is based on the fact that the late time back scattered signal can be analyzed into a summation of damped sinusoids which is called the natural modes of the object. The E-pulse technique is a technique that extracts an identifying signal called an E-pulse from the late time response. The convolution of such a pulse with the back scattered signal from the original signal results in a null result after the early time is elapsed. The convolution with the backscattered signal from other objects reveals none zero level in the late time. The identification is done laboratory over gold coated statues in the Egyptian museum. Good identification between different statues is noticed experimentally.