Essay on The Global Positioning System

The possibilities for the future afforded to the human race by the technology created today is endless. However, one technology has already and will continue to change the way people travel around the planet: Global Positioning Systems (GPS). For travelers throughout history, figuring out where they were and where they were going was one of the oldest problems. Even in recent years, navigation and positioning was crucial to many activities but extremely cumbersome. However, in its need for a precise form of global positioning, the Department of Defense (DoD) created the most useful navigation system in history. The creation and production of the GPS system by Rockwell Collins changed the way people travel

Enclosed report deals with the launching price problem being faced by TerraCog for its forthcoming GPS product Aerial, different options that are available to the company, selection criteria for evaluation and proposed solution along with action plan and contingency plan.

To be able to do this Radio Frequency Identification Tag (RFID) and Global Positioning Systems (GPS) must be employed.

Consisted of 24 satellites, the system could pinpoint a GPS receiver anywhere on the globe with an accuracy of several feet to several yards

Longitude: The True Story of a Lone Genius Who Solved the Greatest Scientific Problem of His Time is written by Dava Sobel. The book is called Longitude because it is about a clock maker who was able to determine longitude. Determining longitude was the superlative scientific question in the eighteenth century that Galileo and Newton were not able to resolve.

Garmin is the leading worldwide provider for navigation1. It has been setting the standards for the Personal Navigation Devices (PND) with the creation of superior products and providing the users with what they need from their PNDs. Other than your personal GPS for your car, Garmin has also been in the market for other incredible devices. Their products are readily available for marine, aviation, fishing industry. It provides GPS navigation systems for the marine and aviation industry. It provides aquatic life updates for the fishing industry along with the GPS technology. They have also been recently working on their premium line of wearable devices to promote health and fitness. They provide GPS sensors for the market where these can

Although Global Positioning technology has existed since the mid 1970’s, some of the most significant advancements have taken place within the last five years. In recent months, studies have been conducted by NASA and other institutions concerning the use of advanced GPS technology in both computer controlled flight of commercial aircraft and the establishment of “no-fly safety bubbles” around designated areas and buildings. In essence an aircraft’s computer system would override a manual command and not allow the craft to enter these designated areas. There are many possible benefits of this technology, but with any new advancement also comes ethical questions. While some believe this technology will increase air travel safety, others

GPS is the most modern technology or system used for surveying. GPS receiver and Measuring tape are instruments to be used.

The Global Positioning System (GPS) is a very simple to use but very complex in terms of how it works. The Global Positioning System relies on a network of 24 satellites approximately 20200 kilometres above Earth in space, orbiting on 6 different routes (four satellites each route). These satellites will orbit the twice in the time frame of only 24 hours. The Global Positioning System Satellites work by transmitting 2 radio signals also known as L1 and L2 to the Global Positioning System, the L1 signal consists of a frequency of 1575.42MHz and the L2 signal with a frequency of 1227.60MHz. These signals are sent once a Global Positioning System is within the line-of-sight connection with at least 3 satellites. Once in the light-of-sight, the satellites broadcast radio wave signals towards the Global Positioning System that carry information of location and time. Once these signals are sent, a special type of equipment called a Global Positioning System receiver receives them and decodes the information carried. The Global Positioning System can be used for numerous jobs such as navigation for cars, ships and aeroplanes, various military jobs, measuring large landscapes and measuring changes in water levels. With the application of Global Positioning Systems for navigation the risk for road, air and water collisions has been greatly reduced due to the Global Positioning System giving guidance to driver, pilots and ship captains uncertain of their location. Along with the

GPS is an important measure used in field surveys to accurately determine the position of a site. In this case, it was used to map the Capel Dewi MST mast array. At each mast on the border of the array, a measurement was taken in order to obtain a grid reference. The reference point was set up and coordinated accurately, and post processed accordingly. The data was then collected around the array and was repeated with three different rovers to measure precision and view the effects of using a different satellite system; the first two were ******** receivers and the third was a GLONASS receiver. The third rover was unable to obtain data on one side of the field as bushes were blocking the satellite signal. Data was spliced into the original data set to make up the shortfall. The precision of the data varies across the field, generally with a higher precision closer to the reference point. This is caused by points further away from the reference points going through the same post processing as the reference point, and as its true position is further from the reference point, the post processing is less accurate. However, there is some degree of variation from point to point depending on the position of the rover as the measurement was taken.

• To calculate its location in latitude and longitude coordinates based on the location information received from a satellite through the GPS receiver.

Several technologies are available for the purpose of localizing a person. A GPS is locator/receiver available on most smart phones and can be used to roughly locate a user. However, it comes with its drawback. The GPS is unavailability indoors. Its usage is limited inside buildings and places unreachable by satellite signal.

The GPS is a 24-satellite based navigation system. The first satellite went into orbit in 1978 with the last one going into orbit in 1994. In the 1980 's, GPS was released from the Department of Defense and authorized for business and personal use. The beauty of GPS, is it works in any weather conditions, anywhere and anytime, yet is free of subscription fees. ("Garmin | What is GPS?," n.d.)

A GPS receiver must be locked on to the signal of at least three satellites to calculate a 2D position (latitude and longitude) and track movement. With four or more satellites in view, the receiver can determine the user's 3D position (latitude, longitude and altitude). Once the user's position has been determined, the GPS unit can calculate other information, such as speed, bearing, track, trip distance, distance to destination, sunrise and sunset time and more.

Upon a request from a subscriber for location information about an MS, the service provider will contact a location control center querying it for the coordinates of the MS. This subscriber could be a commercial subscriber desiring to track a mobile device or a PSAP trying to answer an E-911 call. The location control center will gather information required to compute the MS’s location. This information could be parameters such as received signal strength, BTS ID, TOA of signals, and so on that we discuss later. Depending on past information about the MS, a set of BS’s could be used to page the MS, and directly or indirectly obtain the location parameters. These are sometimes called Geolocation base stations (GBSs). Once this information is collected, the location control center can determine the location of the mobile with certain accuracy and convey this information to the service provider. The service provider will then use this information to visually display the MS’s location to the subscriber. Sometimes the subscriber could be the MS itself, in which case the messaging and