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defense advanced gps receiverThe GPS or Global Positioning System is a global navigation system used for military and civilian applications alike.
GPS derives in part from its predecssor, the LORAN navigation system. LORAN was designed for ship and airplane navigation in the 1940s for use during World War II. GPS signals can also be affected by multipath reflections of the radio signals off the ground and/or surrounding structures (buildings, canyon walls, etc). For long delay multipath signals, the receiver itself can filter the signals out. A variety of receiver techniques, most notably Narrow Correlator spacing, have been developed to mitigate multipath errors. In late 2005, the US government introduced the first in a series of new generation GPS staellites offering new capabilities. Chief among these is a second civilian GPS signal called L2C for greater accuracy and reliability. GPS has become a vital global utility, indispensable for modern navigation on land, sea, and air around the world, as well as an important tool for map-making, and land surveying. GPS also provides an extremely precise time reference, required for telecommunications and some scientific research, including the study of earthquakes. GPS allows the military to accurately target its missile arsenal, largely composed of cruise missiles and precision-guided munitions. This was born out by the use of SOFLAM (Special Operations Forces Laser Acquisition Markers) targeting during the attacks on Tora Bora in Afghanistan. It also improves the accuracy of the US submarine launched ballistic missiles by providing precise locational information to the submarine commanders. Finally, command and control over troops is improved because commanders know precisely where their troops and the enemy are located on the battlefield. Commercial civilian GPS receivers are purposefully less accurate than they might be. In specific, they are required to have limits on the velocities and altitudes at which they will report coordinates in order to prevent them from being used to create improvised missiles. The author would have loved to have used GPS years ago in college. We had a class where we used maps and compasses. We were given precise coordinates and had to plot a course through woods and streams and swamps to find and sign in at specific latitude and longitude coordinates. Today, this sport, now called "geocaching", is a popular activity, particularly for outdoor hiking enthusiasts. In 1998, Vice President Al Gore announced plans to upgrade GPS with two new civilian signals for enhanced user accuracy and reliability, particularly with respect to aviation safety. More accurate GPS receivers are used these days in surveying to accurately locate boundaries, structures and so on. GPS receivers calculate their current position (latitude, longitude, elevation), and the precise time, using the process of trilateration after measuring the distance to at least four satellites by comparing the satellites' coded time signal transmissions. In early years, the US military made the civilian application purposefully less powerful than it could. But since August 2000, the GPS civilian application provides the accuracy of GPS signals to within 2 meters (6 ft). Fact is, GPS accuracy can be improved further, to about 1 cm (half an inch) over short distances, using techniques such as Differential GPS (DGPS). The first experimental Block-I GPS satellite was launched in February 1978. The GPS satellites were initially manufactured by Rockwell International and now manufactured by Lockheed Martin. Because GPS is as much an accurate time keeper as a locator, one of the most common applications for GPS units is as a reference clock for time code generators or NTP clocks. For instance, when monitoring earthquakes, each seismic sensor can be synched with the GPS system to provide a synchronized, precise time source for measurements. When it was first deployed, GPS included a feature called Selective Availability (or SA) that introduced intentional errors of up to a hundred meters into the publicly available navigation signals, making it difficult to use for guiding long range missiles to precise targets. Additional accuracy was available in the signal, but in an encrypted form that was only available to the United States military, its allies and a few others, mostly government users.
1. Defense Advanced GPS Receiver - Wikipedia, the free encyclopedia
The Defense Advanced GPS Receiver (DAGR) is a handheld GPS receiver used by the United States Department of Defense and select foreign military services. ... 2. DAGR: Defense Advanced GPS Receiver Our portable, versatile GPS receiver provides precision guidance capabilities for ... The Defense Advanced GPS Receiver (DAGR) offers the smallest and lowest weight hand-held ... 3. Defense Advanced GPS Receiver (U) (U) Defense Advanced GPS Receiver (DAGR) is the next generation handheld GPS receiver and is a follow-on to the Precision Lightweight GPS Receiver (PLGR) ... 4. DEFENSE ADVANCED GPS RECEIVER (DAGR) Defense Advanced GPS Receiver (DAGR) Description. Airman 1st Class Steve Vonack, 3rd Air ... AN/PSN-13 Defense Advanced GPS Receiver (DAGR) is a self-contained, ... 5. Handheld navigation Rockwell Collins' Global Positioning System (GPS)-based equipment is unsurpassed for ... Defense Advanced GPS Receiver (DAGR) is the U.S. Department of Defense's standard ... 6. Is This A DAGR I See Before Me? These military-grade GPS receivers are becoming common among American units and their allies, often operating ... Defense Advanced GPS Receivers (DAGRs) will serve as a smaller, ... 7. DAGR - Defense Advanced GPS Receiver The diagrab below shows the evolution of the Rockwell GPS receivers. ... More importantly GPS receivers rated for air or space usage have more ... 8. Global Positioning System - Wikipedia, the free encyclopedia Civilian GPS receiver ("GPS navigation device") in a marine application. ... and the GPS receiver clock can be advanced if is positive or delayed if is negative. ... 9. Military GPS Receiver Packaging Raytheon Selected for Revolutionary Defense Advanced GPS Receiver Development ... DAGR is scheduled to replace the existing Precision Lightweight GPS Receiver (PLGR) ... 10. Rockwell Collins Wins $450 Million Handheld GPS Receiver Contract PR: Rockwell Collins has received a $450 million follow-on contract to provide Defense Advanced Global Positioning System Receivers (DAGR) to the U.S. Air Force GPS ... 11. $58.6M for 25,000 DAGR GPS Receivers This contract modification exercises production options for the purchase of 25,000 Defense Advanced GPS Receivers (DAGRs) and accessories. ... 12. Rockwell Collins Awarded Defense Advanced GPS Receiver Follow ... The Global Positioning Systems Wing awarded a sole-source follow-on production contract for Defense Advanced GPS Receiver with a ceiling of $450M to Rockwell Collins ... 13. New GPS Handheld Receiver Planned for 04 The U.S. Defense Department is preparing to test a next-generation Global Positioning System handheld ... known as the Defense Advanced GPS Receiver (DAGR), will replace the ... 14. Raytheon Selected for Revolutionary Defense Advanced GPS ... Raytheon Selected for Revolutionary Defense Advanced GPS Receiver Development ... DAGR is scheduled to replace the existing Precision Lightweight GPS Receiver (PLGR) ... 15. Global Positioning System: Definition from Answers.com Global Positioning System n. ( Abbr. GPS ) A system of satellites, computers, and receivers that is able to determine the latitude and longitude of 16. The year of decision for GPS vulnerability - Military ... Military & Aerospace Electronics - The year of decision for GPS vulnerability - Threats to vital Global Positioning System signals are growing every year, and defense ... 17. SRCSGT | 58 | Defense Advanced GPS Receiver (DAGR) | 09-May ... 58 -- Defense Advanced GPS Receiver (DAGR) Notice Date. 5/7/2007. Notice Type. Sources ... requirement for Defense Advanced GPS Receivers (DAGRs) or equivalent. ... 18. Rockwell Collins gets order for 25,000 more handheld DAGR GPS ... U.S. Air Force officials are buying an additional 25,000 Defense Advanced GPS Receivers (DAGRs) and accessories from the Rockwell Collins Inc. ... 19. Rockwell Collins - Cedar Rapids, IA:Defense Advanced GPS ... In 2005 the Coralville facility received a production contract for a new Defense Advanced GPS Receiver (DAGR) unit with more stringent performance requirements. ... 20. Trimble - Defense Trimble Military and Advanced Systems develops advanced GPS solutions for the defense aerospace industry. 21. International Cooperative Testing (ICT) in Support of the ... International Cooperative Testing (ICT) in Support of the Defense Advanced GPS Receiver (DAGR) Acquisition. Author: ... of finding any deficiencies before the receiver is fielded. ... 22. Rockwell Collins Aims GPS Receiver At Commercial Market The receivers offer the same functionality and ruggedness of the company's Defense Advanced GPS Receiver (DAGR) and Miniature Precision Lightweight ... 23. THe STorY of gPS In addition, a GPS military receiver card for integration with an. inertial measurement ... GPS Receivers (PLGR), or more recently, the Defense Advanced ... 24. Rockwell Collins Wins $450 Million Handheld GPS Receiver ... TradingMarkets News for Rockwell Collins Wins $450 Million Handheld GPS Receiver Contract ... To view a photo of the Defense Advanced GPS Receiver, please visit: ... 25. How to Choose a GPS Receiver: Expert Advice from REI All GPS receivers sold at REI perform four basic functions: location, ... maps, type of antenna and the presence of an advanced processor chip. A GPS receiver does NOT replace ... 26. Position fix - C4ISRJournal.com - Military Intelligence ... But even as the Defense Advanced GPS Receivers, or DAGRs, have filtered down the ... The newest GPS satellites can transmit M-code, but soldiers will not ... 27. GPS Technology In fact, with advanced forms of GPS you can make measurements to ... GPS receivers have been miniaturized to just a few integrated circuits and so are ... 28. Rockwell Collins' new MicroDAGR GPS receiver for soldiers ... This latest-generation navigation device, which is a smaller version of Rockwell Collins' highly successful Defense Advanced GPS Receiver (DAGR), brings ... 29. Precision Lightweight GPS Rec. (U) (U) The Precision Lightweight GPS Receiver (PLGR) was acquired to fill a need for ... Related Initiatives (U): Name. Title. Defense Advanced GPS Receiver ... 30. Rockwell Collins Wins $450 Million Handheld GPS Receiver Contract To view a photo of the Defense Advanced GPS Receiver, please visit: http://www.vocus.com ... associated with Rockwell Collins providing Defense Advanced ... 31. Rockwell Collins wins $450 million handheld GPS receiver contract Rockwell Collins has received a $450 million follow-on contract to provide Defense Advanced Global Positioning System Receivers (DAGR) to the U.S. Air Force GPS Wing. ... 32. GPS World Warfighter: news, articles, and information on GNSS ... GPS World's Warfighter section offers exclusive daily news, features, opinion pieces, and policy developments on GPS and GNSS technologies used for military warfighters. 33. Improved GPS Receiver Provides Increased Benefits To Warfighters ... 11 years ago with its PLGR Precision Lightweight GPS Receiver. At the time, PLGR was ... upon its original GPS and is prepared to field the Defense Advanced GPS Receiver. ... 34. Trimble - Force 524D Trimble's Force 524D is a high dynamic, high performance GRAM-compliant module, designed for Embedded GPS/INS applications. 35. PPS versus SPS | GPS World Photo, top left: The Defense Advanced GPS Receiver (DAGR), certified for military use. Inset, one of many commercial units that soldiers may carry in the field. ... 36. Defense.gov: Contracts for Friday, August 10, 2007 The DAGR will serve as a replacement for the Precision Lightweight GPS Receiver (PLGR) in integrated platforms as well as for the advanced and basic GPS user. ... } ?>
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