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The document referenced below is part of the NCJRS Library collection.
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NCJ Number: NCJ 187101     Find in a Library
Title: Offender Wide Area Continuous Electronic Monitoring Systems: Executive Summary
  Document URL: PDF 
Author(s): Joseph Hoshen ; George Drake
Date Published: 2000
Page Count: 6
  Annotation: This report discusses the technical, theoretical, and computational problems associated with wide-area continuous electronic monitoring of offenders.
Abstract: These second-generation systems make it possible to track individuals in places other than their homes and workplaces. Thus, the systems tighten the supervision of parolees and probationers while increasing public safety. The present research focused on identifying radio frequency location methods to apply to second-generation monitoring systems and on analyzing the effects of reflected signal on the solutions to the positioning problem. The analysis suggested the desirability of five goals for these systems. First, the system should be able to determine the offender position with accuracy of 50 meters 67 percent of the time and 150 meters 95 percent of the time. Second, the system should be able to track the offender’s position within the specified accuracy at all locations that wireless communications can reach. Other proposed goals include making geolocation information available in real time, having a locator tag that can detect tampering and alert the monitoring center, and giving the offender an audible signal if the locator device is out of communication range. The analysis concluded that exploiting emerging infrastructures and geolocation technologies by the private sector is likely to lead rapidly toward the development of the new systems and that educating professionals, entrepreneurs, and the public about the systems’ benefits could stimulate this effort.
Main Term(s): Community-based corrections (adult)
Index Term(s): Alternatives to institutionalization ; Technical evolution ; Electronic monitoring of offenders ; Offender tracking systems ; NIJ final report
Sponsoring Agency: National Institute of Justice (NIJ)
US Department of Justice
Office of Justice Programs
United States of America
Grant Number: 98-LB-VX--K005
Sale Source: New Mexico Dept of Corrections
1422 Paseo De Peralta
Santa Fe, NM 87503
United States of America

NCJRS Photocopy Services
Box 6000
Rockville, MD 20849-6000
United States of America
Type: Report (Technical)
Country: United States of America
Language: English
Note: See NCJ-187102 for the Project Summary
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