Data Visualization for Low-Frequency Inverse Synthetic Aperture Radar (ISAR)

Data Visualization for Low-Frequency Inverse Synthetic Aperture Radar (ISAR)

Giti Javidi (College of Business, University of South Florida, Sarasota, USA) and Ehsan Sheybani (College of Business, University of South Florida, Sarasota, USA)
DOI: 10.4018/IJITN.2018070101

Abstract

The purpose of this article was to use ISAR to determine the distance between the receiving antenna and the transmitting antenna. Once a systematic approach has been determined, this article could be used on a spacecraft to locate debris in the path of the carrier. Using low frequency radar that has the transmitting pulse built within the converters, the authors transmitted the data and determined the distance between the two antennas according to the time delay of the radar. Using amplified signals, the relationship between the distance and the time delay for the radar were calculated for each case. Additionally, these results were used to visualize in real-time the data transpired between the receiver and transmitter.
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Methodology

As shown in Figure 1, the low frequency ISAR project starts off with a transmitter that converts data into step-frequency pulses and transmits. This radar is made up of four major block diagrams. 1) Xilinx Development board is a programmable board that sends out the pulse; 2) FPGA (Field-Programmable Gate Array) Extension board has the annexes which allow the signal to be transmitted through the antennas; 3) Data Acquisition board which collects the received data and sends it to the FPGA board; 4) The FPGA board analyzes the data and allows it to be seen on the computer, through the Matlab code that was built for the radar. The radar also has an IF mixer which allows the reference signal and the received data to be synchronized, combined and sent to the data acquisition board.

Figure 1.

Block Diagram of the Low-Frequency ISAR

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