GPS

A global positioning system for emergency use

Global positioning systems, also called GPS systems, are part of a space-radio orientation system which provides reliable navigation, positioning and timing information to civilian users at no charge. GPS has its origins in an advanced technology which was developed for use by the United States military. The GPS consists of three parts: satellites which orbit the Earth, monitoring and control stations, and GPS receivers.

The component of GPS that is appropriate for a disaster preparedness kit is the receiver, which is commonly referred to as a GPS. A handheld GPS is helpful in the event of an emergency; GPS played a huge role in the rescue and relief efforts for such recent disasters as Hurricane Katrina in New Orleans and the tsunami which occurred in the Indian Ocean in 2004.

GPS is increasingly incorporated into today’s cell phones and passenger cars; GPS combined with crash sensors in automobiles has proved to be invaluable in decreasing the response times to automobile accident scenes.

Since a disaster can easily occur when you do not have access to your cell phone or automobile, it makes sense to consider a handheld GPS receiver as a helpful item in a complete disaster kit. Some GPS receivers are combined with walkie-talkies, which allow two-way communication in addition to GPS capabilities. One type of GPS technology devised for emergencies is a personal location device; when activated, it sends out an alert signal which is transmitted via satellite to a rescue coordination station. More complex GPS receivers include real-time maps and require regular GPS software updates to maintain current map information.

GPS receivers must have direct lines of sight to a minimum of three orbiting satellites in the sky to provide you with an accurate fix of your location. Concrete buildings and steep rocky terrain may interfere with the lines of sight and cause a GPS to display inaccurate information or fail to identify your specific location.

Why Is a GPS Important in a Disaster Kit?

  • GPS can be helpful when identification of your location is needed, or when you need directions to another location.
  • Global positioning systems make it easier for rescue workers to locate you in an emergency.
  • GPS are far more reliable and useful than portable radios in survival and rescue situations.

Things to Consider When Buying a GPS

  • What GPS features do I need?
  • Do I need a handheld GPS, or a model designed for use in my car or cell phone?

Top GPS Brands

  • Garmin GPS
  • Magellan GPS
  • TomTom GPS