Division of Adult Parole Operations (DAPO)
How GPS Monitoring Works
Global Positioning System (GPS) monitoring works due to the triangulation of satellites orbiting the earth. Twenty-four satellites are used in all.
To "triangulate" means that a GPS receiver measures distance using the travel time of radio signals. When a user's GPS ankle unit reads the signals sent to it by the satellites, these signals can provide information as to the wearer's location, speed of movement and direction of movement.
Active VS Passive GPS Measuring
Active GPS transmits its location at near real-time intervals and can include immediate alert notifications.
Passive GPS transmits its location at set intervals and alert notifications are usually received the next day.
Use of GPS Data
Crime Scene Correlation
GPS Offender Data
Crime Data from Law Enforcement
Comparing GPS Data with Crime Data
Automatic notification of "hits" via e-mail and other means
Geographic Information Systems (GIS)
Division of Adult Parole Operations Links
- 2011 Public Safety Realignment - DAPO Informational Overview
- 5 Year Road Map
- California Parole Apprehension Teams (CPAT)
- Lifer Parole Process
- Parole Requirements
- Parole Services
- Parolee Conditions
- Parole Museum
- Parolee On-Line Handbook
- Parolee Restitution Payment Instructions
- Restitution Responsibilities, Information for Adult Offenders
- Sex Offender Facts & Figures
- Sex Offender Management Board
- State Authorized Risk Assessment Tool for Sex Offenders (SARATSO) Committee