Future use of GPS

To allow GPS to work better in the future, we need to fix the

inadequacies, today.

We need to increase the accuracy to make GPS work well  under any weather conditions. We can do this by combining different functions with a GPS locator. 

For  military use, there needs to be much more improvements. These include missiles deployment accuracy and unmanned airplanes to increase efficiency and effectiveness. 

GPS controlled cars, house alarms and kidnapping prevention are examples of general concerns for the average person. Improvements on these applications of GPS could make people's daily life better and in some ways, even safer. 

Pros & Cons of GPS

Pros:

GPS use is efficient and effective. It can provide accurate pinpoint locations. We can estimate the time of our trips by using GPS. Most GPS applications on mobile or other electronic devices perform a user friendly way and we can easily save our searched locations and plan our trips.

GPS can prevent us from loss and steals. We can keep track of objects which a GPS locator and find there locations. We can use GPS to monitor our house, or even children.

GPS provides people safety in many fields. If we go travelling and get lost, GPS can tell us where we are and save our lives. If we are driving, GPS can tell us what speed we are driving at and warn us if we drive too fast. 

Cons:

But GPS also has limitations. Some discrepancies and fading errors may occur when using GPS. In the areas where the signals are weak or the weather condition is really terrible, such as underground or storming, GPS may tell us wrong information.

Some GPS applications are voiceless and they display in images only. This will distract people's attention, which causes accidents to happen. For example, assume a driver is driving, because he/she just want to have a look at the GPS screen to know which street he/she is heading to, his/her attention will not be concentrated on driving. This definitely will increase the danger of car accident.

Constructions and road closures are not always included in the information that GPS provided. Thus we may get wrong information. Clock inaccuracy is also another concern when using GPS.

GPS Applications

  Environment             

• Earthquake anticipation
• Protect earth environment
• Weather forecast

                                   Marine

                                  

                                        - Position, speed & heading
                                        - Safety
                                        - Fishing

 Aviation

  * Navigation
  * Efficiency
  * Safety

                                        Roads & 

                                       Highways

               

                                                         

                                                - Road conditions

                                                - Safety

                                                - Transit schedule

Using GPS in a car or with a Mobile Phone

• To track locations of where we are.

• To provide directions about the routes of getting to our destinations.

• To connect with other people and know about where they are.

GPS Brief Introduction

GPS stands for Global Positioning System. It is a worldwide space-satellite based  navigational system which provides users with the accurate location information at anytime under any weather conditions. This system is formed by 24 satellites orbiting the earth. 

The GPS satellites emit coded high-frequency radio signals to the GPS receivers. These radio signals contain data about the location and the exact time to the earth-bound receivers. After the radio signals are received by the GPS receivers, the computer software will decode the high-frequency radio signals and calculate the geographical location. GPS can calculate the longitude and latitude of the receiver if using only three satellites. GPS can also calculate the altitude if using four satellites.

References

References

http://en.wikipedia.org/wiki/Global_Positioning_System

http://adventure.howstuffworks.com/outdoor-activities/hiking/how-to-use-gps.htm

http://www.gps.gov/applications/

http://www.montana.edu/gps/understd.html

http://www.webopedia.com/TERM/G/GPS.html

http://electronics.howstuffworks.com/gadgets/travel/gps.htm