navigation from ancient to modern. navigation the way of charting a course and the methods used to...
TRANSCRIPT
S
NavigationFrom Ancient to Modern
NAVIGATION
the way of charting a course and the methods used to find the way to a specific location.
Viking Navigation with a Sun Board
TOOLS USED TO NAVIGATE
Compass wherever you stand on Earth, the needle on
the compass will point toward the Earth’s pole.
The needle is a small metal magnet on a frictionless pivot point attracted to the magnetic pull from the planet’s core.
Used to navigate land and underwater.
COMPASS
TOOLS USED TO NAVIGATE
Chronometer Portable clock of great
accuracy used on determining longitude at sea.
CHRONOMETER
TOOLS USED TO NAVIGATE
A sextant determines latitude by measuring the position of the Sun and stars based on the instruments arc which is 1/6 of a circle.
SEXTANT
TOOLS USED TO NAVIGATE
Radio Beacons 1921 First electronic aid to navigation
TOOLS USED TO NAVIGATE
Radar System of determining and
displaying the distance of an object by measuring the time it takes for a radio signal echo to return.
“radio detecting and ranging”
RADAR
TOOLS USED TO NAVIGATE
Loran Long range navigation,
electronic timing device which measures the difference in arrival time of radio signals from pairs of land stations.
LORAN
TOOLS USED TO NAVIGATE
Satellite Navigation System Orbiting satellites emit a signal
at a precise frequency and a receiver on a ship measures the frequency shift to determine position to within 30 m.
SATALLITES
TOOLS USED TO NAVIGATE
Global Positioning System Worldwide radio-navigation using
24 satellites and 5 ground-based monitoring stations used as reference to calculate position within a few meters and advanced to within a few centimeters.
GPS SATALLITES
GPS
Precise measurements of distance between a receiver and four satellites will pinpoint the exact location of the receiver with GPS.
GPS
GPS can be used to measure the velocity of a moving receiver as well as its location.
GPS
Oceanographers are developing new technologies for using GPS in underwater applications.
A major problem in using GPS underwater is that GPS signals are radio waves, which are quickly absorbed by water.
SONAR
Used for underwater applications
RV New Horizon