In the spirit of providing you with access to other interesting GPS links, here are a few for your perusal. If you would like to see a link not already here, please let us know. We welcome your suggestions.
Online Courses - this website offers a variety of courses from Yale, Stanford, Harvard and other prominent universities.
Surveying.org -here's a website that I thought would be of general interest to the GPS-GIS community.
Trimble Online GPS Planning Tool - we discovered a GPS planning tool on Trimble's website. Use this to predict GNSS (GPS & GLONASS) satellite visibility over your project site before you go into the field.
What is the Geoid separation at my project site? - this site will provide you with the Geoid separation at a given location based on latitude, longitude. Once calculated, you can type that value into the GPS Preferences/GPS Height tab in ArcPad. This will allow ArcPad to collect elevations (MSL) rather than GPS heights (HAE).
Convert Latitude-Longitude Coordinates - use this online utility to convert Latitude, Longitude coordinate from any format to any other format.
Ingress Protection Specifications (IP ratings) - this link describes the IP specifications that are assigned to each Trimble GPS unit. It defines the level of environmental exposure the unit can withstand and remain fully operational.
Calculate Magnetic Declination -this link allows you to find out what the magnetic declination is in your area.
Maps and GPS Information -this site is excellent for those looking for information about maps and recreational GPS receivers. You'll also find a large list of otherwise hard-to-find links on these and other related subjects.
What UTM Zone am I in?- This link takes you to a UTM Zone map that will help you determine what UTM Zone you are in when using GPS or when trying to register a raster image.
USGS Map of UTM Zones -Use this link to see a UTM Zone map of the US and lots of other information about projections, coordinate systems, etc.
MSR Maps -(previously called TerraServer USA) This site is sponsored by Microsoft and populated with digital topographic maps and aerial photos of virtually every square inch of the continental United States. High resolution images (down to .25 meters) are available in most highly populated areas. (For more information about how to prepare aerial photos for use in TerraSync or ArcPad, please click here)
Special "Earth View" Department
Google's New Satellite Tracking Site- Track your favorite satellite from this great new site! Select the satellite and see it over a low-orbit, color graphic of the earth.
A View of Earth from a Satellite- Would you like to see a planetary view of the earth from a satellite? Go to this link.
Special GPS Personnel & Vehicle Tracking Links
Track Your Truck GPS Vehicle Tracking -Systems that integrate with everyday business operations, backed by reliable services and customer support.
Rocky Mountain Tracking -new low-cost solution to track a vehicle for monitoring or recovery.
GPS Tracking Collar for your Pet -check out the latest in tracking technology for your dog.
GPS Tracking Technologies- This company helps fleet managers plot a profitable course of action by tracking and verifying the daily activities of their mobile fleet.
GPS-GIS Users Groups
GPS Magazines for the Surveying and Mapping Industries
GeoSpatial Solutions- An excellent magazine focusing on the use of GPS for the GIS industry.
GPS World Magazine- Check out GPS World Magazine Online. This is the premiere publication for the GPS industry.
Professional Surveyor Magazine Online- See the latest calendar of events or check out the classifieds. And don't forget to search the job market with listings of available personnel and help wanted ads, all within the survey industry. You can also submit your resume, putting your qualifications in front of perspective employers.
CORS, NGS, USGS Coverage Maps & USGS NANU Subscription Services
CORS Coverage Map- Go to this link for the Continuously Operating Reference Station map. These stations log code and carrier phase GPS data at various sampling rates. These data can be used to process rover files collected with GPS mapping or survey systems. (important information about CORS)
USCG DGPS Coverage Map- Go to this link to see the coverage map for the Coast Guard differential GPS beacons. Choose the region of the country you want to see. Existing and Proposed sites are listed; darkened triangles for existing sites; clear triangles for proposed sites.
USCG NANU Subscription Service- the US Coast Guard provides this email subscription service so you can receive the latest Notice Advisory to NavStar Users (NANU). This GPS status report is generated whenever a change in the GPS constellation takes place that could affect GPS users. It is an invaluable planning tool.
FBN (Federal Base Network) Survey Status Map- looking for a control point somewhere near you? Check out the Federal Base Network. Simply go to your state and find details on the survey monument, including directions on how to find it.
NGS Data Sheets- visit this site to obtain information on control points in the High Accuracy Reference Network (HARN).
Washington State Department of Transportation Survey Monuments- find monuments within the state of Washington.
Earthpoint -Use this link to convert latitude, longitude to township, range and section. A very useful tool for those who need to know where they are in the older PLSS. You can also "Fly to Google Earth" after the conversion is complete.
GeoTours -lets you create media-rich GPS tours that can contain audio, images, and text. View and share tours on the web and download to a Garmin GPS device, smartphone, PDA, iPod, and more, to use as your personal GPS tour guide!
Atomic Clock on the Internet- this is a new government site providing the exact time anywhere in the US. Included is a world map showing current daytime and nighttime areas.
Official NGS Geoid Page- Take a look at the services and links available on this home page for the latest Geoid model.
Send mail to Jim Lahm with questions or comments about
this web site.