Navigation Satellites And Their Uses

The type of satellite that is launched to monitor cloud patterns for a weather station will be different than a satellite launched to send television signals across canada.

Navigation satellites and their uses. It allows small electronic receivers to determine their location longitude latitude and altitude elevation to high precision within a few centimeters to metres using time signals transmitted along a line of sight by radio from satellites. Navigation satellites artificial satellites can provide the basis for all weather long term navigation systems to determine with accuracy geodetic position speed and direction of a surface vehicle or aircraft north reference and vertical reference. Satellite navigation is a space based radio positioning system that includes one or more satellite constellations augmented as necessary to support the intended operation and that provides 24 hour three dimensional position velocity and time information to suitably equipped users anywhere on or near the surface of earth. Kennan big bird lacrosse reconnaissance satellites are used to spy on other countries.

Their ground traces are asymmetrical figure 8 patterns created. Enhanced instruments can even pinpoint the position of a stationary object to within a few centimetres by measuring the object s position many thousands of times over several hours and then working out the average of the measurements. Satellite navigation allows the precision in the delivery of weapons to targets greatly increasing their lethality whilst reducing inadvertent casualties from mis directed weapons. Satellites are used for many things such as communication oceanography astronomy the surveillance they help many scientists get a perceptive view of all kinds of objects anywhere in the world.

Its three satellites each 120 apart are in highly inclined slightly elliptical geosynchronous orbits. They provide intelligence information on. Reconaissance or spy satellites e g. Because of this they do not remain in the same place in the sky.

Navigation satellites are also widely used by the military. Satellite navigation can be used for providing position navigation or for tracking the position of something fitted with the receiver satellite tracking the signals enable the electronic receiver to calculate the current local time to high precision which allows time synchronization satellite navigation operate on any telephonic or internet reception though these technologies can enhance the usefulness of the positioning information generated. Satellites can be classified by their function since they are launched into space to do a specific job.