Skip common site navigation and headers
United States Environmental Protection Agency
Exposure Research
Begin Hierarchical Links EPA Home > Research & Development > Exposure Research > Publications/Presentations > End Hierarchical Links

 

Remote Sensing for Environmental Compliance Monitoring

spacer
spacer
Abstract:I. Remote Sensing Basics
A. The electromagnetic spectrum demonstrates what we can see both in the visible and beyond the visible part of the spectrum through the use of various types of sensors.
B. Resolution refers to what a remote sensor can see and how often.
1. Spatial resolution addresses the smallest feature size which can be seen or differentiated from an adjacent feature based on the sensor being used.
2. Spectral resolution refers to the spectral bands which a sensor is capable of detecting as well as band width.
3. Temporal resolution refers to the frequency with which remote sensing data are collected and the archival record available for a given sensor.
4. Photogrammetryis the art and science of making accurate measurements on remote sensing images; the technology is also used for making accurate maps from remote sensing data.
C. Sensor types are varied. Selected sensor types are either active or passive. Radar is an active sensor because it generates and transmits its own source of electromagnetic energy which interacts with an object and is reflected back to the sensor for recording and analysis. Cameras, multi spectral and hyperspectral scanners, are passive devices which receive and record solar energy which has been reflected or transmitted from objects. Thermal scanners passively receive and detect temperature information being transmitted from hot or cold surfaces.

Aerial Camera/Film is sensitive to the visible and near infrared (reflective, not thermal) portions of the electromagnetic spectrum, depending upon the type of film which is used in the camera.
Radar is an active sensor which can be mounted on aircraft or spacecraft. Radar generates and records its own electromagnetic energy .It "shouts out" its signal and records the part of the signal which bounces off objects and is returned to the sensor .
spacer
Citation:Garofalo, D. Remote Sensing for Environmental Compliance Monitoring. Presented at Managing Technology 2003, Policy, Politics, and Leadership, Atlanta, GA, May 28, 2003.
spacer
spacer
Contact: Chris Siebert - (702) 798-2234 or siebert.christopher@epa.gov
spacer
Division: Environmental Sciences Division
spacer
Branch: Landscape Ecology Branch
spacer
Product Type: Abstrct/Oral
spacer
Presented: 05/28/2003
spacer
Related Entries:
spacer
Bullet Item Superfund Remote Sensing Support
spacer Relationship Reason:   A Project of the Product
spacer
spacer
spacer

 

ORD Home | Search EPA | Search NERL | Search EIMS | Contacts | Help

 
Begin Site Footer

EPA Home | Privacy and Security Notice | Contact Us

Last Updated on Monday, October 22, 2007
URL: http://cfpub.epa.gov