(c) A radio science payload this includes X and K band transponders and an accelerometer

Radio waves are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light.

In 1887, Heinrich Hertz demonstrated the reality of Maxwell's electromagnetic waves by experimentally generating radio waves in his laboratory.

Controls keeping a satellite or rocket in its desired orbit (as in spacecraft navigation) and orientation (as in attitude control).

The operation of the Global Navigation Satellite System (GLONASS) continued. GLONASS is used for the navigation of civil aircraft, sea ships and fishing vessels, as well as for some other branches of the economy.

The additional requirements result from the need to procure aeronautical equipment for additional helicopter landing sites to be established in the area of operation where the additional infantry battalion will be deployed.

Thus, the use of a magnetic compass by the military for land navigation occurred sometime before 1044, but incontestable evidence for the use of the compass as a maritime navigational device did not appear until 1117.

A location identifier is a symbolic representation for the name and the location of an airport, navigation aid, or weather station, and is used for manned air traffic control facilities in air traffic control, telecommunications, computer programming, weather reports, and related services.

It might be that some massive network of communications, or some shield against asteroidal impact, or some huge astro engineering project that we can't even begin to conceive of, could generate signals at radio or optical frequencies that a determined program of searching might detect.

In this context, we are requesting that the International Hydrographic Organization intensify its efforts to build capacity in developing countries for the production of electronic nautical charts to provide data and information that can be used in fisheries activities and for other uses, such as the delimitation of maritime boundaries.

The Global Positioning System (GPS) is a space based satellite navigation system that provides location and time information in all weather conditions, anywhere on or near the earth where there is an unobstructed line of sight to four or more GPS satellites.