Web Navigation Systems

Passage Planning ... The Guidelines specify three key items to consider in the practice of voyage planning: having and using a voyage plan is "of essential importance for safety of life at sea, safety and efficiency of navigation and protection of the marine environment," voyage planning is necessary for all types of vessels on all types of voyages, and the plan's scope should be based on all information available, should be "berth to berth," including when under pilotage, and the plan includes the execution and the monitoring of progress...

Navigation ... In addition to bearings, navigators also often measure distances to objects. On the chart, a distance produces a circle or arc of position...

GPS: A Valuable Tool In Navigation ... You look at your map, but it's too difficult to determine where you are in the first place! Save yourself the trouble and discover the world of GPS navigation systems. Put away your compass and don't bother with your maps, a GPS tracking system will take care of all your navigation needs... Using satellite systems around the world, a GPS navigation system is able to locate your exact position in the world, no matter where you are. GPS is a satellite-based radionavigation system developed and operated by the U...

Space Policy ... It includes policy regarding a country's civilian space program, as well as its policy on both military use and commercial use of outer space. Space policy intersects with science policy, since national space programs often perform or fund research in space science, and also with defense policy, for applications such as spy satellites and anti-satellite weapons...

Satellite Navigation ... China is in the process of expanding its regional Beidou navigation system into the global Compass navigation system by 2020... Several countries including France, Japan and India are in the process of developing regional navigation systems... Classification Satellite navigation systems that provide enhanced accuracy and integrity monitoring usable for civil navigation are classified as follows: GNSS-1 is the first generation system and is the combination of existing satellite navigation systems (GPS and GLONASS), with Satellite Based Augmentation Systems (SBAS) or Ground Based Augmentation Systems (GBAS)...

Global Positioning System ... The GPS project was developed in 1973 to overcome the limitations of previous navigation systems, integrating ideas from several predecessors, including a number of classified engineering design studies from the 1960s...

Animal Navigation ... William Tinsley Keeton (1933-1980) studied homing pigeons, showing that they were able to navigate using the earth's magnetic field, the sun, as well as both olfactory and visual cues. Donald Griffin (1915-2003) studied echolocation in bats, demonstrating that it was possible and that bats used this mechanism to detect and track prey, and to "see" and thus navigate through the world around them...

Celestial Navigation ... Celestial navigation is the use of angular measurements (sights) between celestial bodies and the visible horizon to locate one's position on the globe, on land as well as at sea...

New Horizons ... New Horizons was launched on January 19, 2006, directly into an Earth-and-solar-escape trajectory with an Earth-relative velocity of about 16.26 km/s (58,536 km/h; 36,373 mph) after its last engine shut down. Thus, the spacecraft left Earth at the greatest ever launch speed for a man-made object...

History Of Navigation ... Written records of navigation using stars, or celestial navigation, go back to Homer’s Odyssey where Calypso tells Odysseus to keep the Bear on his left hand side as he sailed away from her island... In the mid first century CE Lucan writes of Pompey who questions a sailor about the use of stars in navigation...

Space Exploration ... While the observation of objects in space, known as astronomy, predates reliable recorded history, it was the development of large and relatively efficient rockets during the early 20th century that allowed physical space exploration to become a reality. Common rationales for exploring space include advancing scientific research, uniting different nations, ensuring the future survival of humanity and developing military and strategic advantages against other countries...