The word "WAAS GII" is traditionally spelled using the alphabet of the Navajo language. The IPA phonetic transcription of this word is /wɑs ɡi/. The first two letters represent the sound "w" as in "water," while the second two letters represent the vowel "a" as in "father." The last two letters represent the sound "g" as in "go," followed by the vowel "i" as in "ski." This word is often used in Navajo culture and can have different meanings depending on the context in which it is used.
WAAS GII stands for Wide Area Augmentation System Generation II. It is a satellite-based navigation system developed by the Federal Aviation Administration (FAA) of the United States.
WAAS GII is an advanced version of the Wide Area Augmentation System (WAAS), and it is designed to enhance the accuracy, integrity, and availability of the Global Positioning System (GPS) signals. It provides differential corrections and integrity monitoring of the GPS signals, making them suitable for use in aviation applications.
The purpose of WAAS GII is to improve the precision and reliability of GPS navigation for aircraft operations. It achieves this by using a network of ground-based reference stations that monitor GPS satellite signals. The reference stations accurately determine any errors present in the GPS signals and then transmit these corrections to WAAS GII satellites. These corrected signals are then broadcast to aircraft through geostationary satellites, allowing pilots to make more accurate and safer navigation decisions.
One of the primary benefits of WAAS GII is the increased accuracy it provides, with horizontal and vertical position errors typically reduced to within 10 meters. This level of precision enables pilots to navigate with greater confidence and safely conduct instrument approach procedures. Additionally, WAAS GII enhances the availability of GPS signals by expanding coverage to areas where traditional GPS signals may be obstructed, such as mountainous terrains and urban environments.
In summary, WAAS GII is an advanced satellite-based navigation system that improves the accuracy, integrity, and availability of GPS signals, ensuring safer and more reliable aircraft navigation.