Spectrometers
Spectroscopy
- The "Hyperspectrum" newsletter, from Opto-Knowledge Systems, Inc. (OKSI)
Small Satellites
GPS, Global Positioning System
- GeoWeb company
- Introduction to GPS Applications
- GPS FAQ, Peter Bennett
- Differential Corrections Inc., Differential GPS and Traffic Messaging Services
- sci.geo.satellite-nav is the Usenet newsgroup for satellite navigation
GPS companies
Scanning
- Image Scans Inc. Aerial film scanning services to the GIS/mapping industry.