Accession Number : ADA310248

Title :   Design of a High-Resolution, Coded, Portable Radar System.

Descriptive Note : Final rept. Oct 93-Sep 95,

Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS INFORMATION TECHNOLOG Y LAB

Personal Author(s) : Ahmad, Falih H. ; Evans, James A. ; Miller, Ernest L.

PDF Url : ADA310248

Report Date : MAY 1996

Pagination or Media Count : 23

Abstract : This report describes the design of a hand-held, portable, microprocessor- controlled, high-resolution radar (HRPR). This report, however, does not include the design of the transmitting and receiving antennas. The high-resolution radar system is designed to be portable, hand held, and microprocessor controlled. The generated carrier is an exponentially decaying sinusoidal wave with a frequency in the GHz range. In this high- resolution radar, analog-to-digital conversion is performed through an integrated circuit chip at a rate of multiple giga samples per second. In addition, digital signal processing is performed and an inversion scheme is embedded in memory chips to generate electromagnetic profiles in real time. In order to achieve high-range resolution, digital codes of certain length such as Barker, Welti, or Frank codes can easily be implemented in this radar system through the application of complementary metal oxide semiconductor (CMOS) logic. The coding of the carrier is made possible through the application of a digitally controlled phase shifter. Power consumption of this high-resolution radar is moderate. Thus, in addition to being hand held, the complete system is mountable on any vehicle as well. As a result, this radar system can be used to perform target and media identification in real time. This process is totally performed by the micro- processor of the system and identification results are displayed visually. The portable high-resolution radar consists of four parts: a transmitter, a receiver, a microprocessor, and d-c power supply.

Descriptors :   *RADAR, *HIGH RESOLUTION, SIGNAL PROCESSING, DIGITAL SYSTEMS, MICROPROCESSORS, REAL TIME, ELECTROMAGNETIC PROPERTIES, CHIPS(ELECTRONICS), PROCESSING EQUIPMENT, METAL OXIDE SEMICONDUCTORS, IDENTIFICATION, MEMORY DEVICES, CODING, PROFILES, ANTENNAS, POWER SUPPLIES, MEDIA, INVERSION, ANALOG TO DIGITAL CONVERTERS, DIRECT CURRENT, COMPLEMENTARY METAL OXIDE SEMICONDUCTORS, HAND HELD, PHASE SHIFT CIRCUITS.

Subject Categories : Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE