Provided is a navigation signal transmitter capable of ensuring reduction in frequency deviation of a terrestrially transmitted navigation signal at low cost. The navigation signal transmitter is operable to receive a transmission wave, generate a synchron...

A navigation signal transmitting apparatus and a location information providing apparatus are provided each of which achieves reduced time of positioning with a positioning signal from an indoor positioning transmitter. When an information providing server...

Positional information is provided at a place out of reach of radio wave. The process executed by a positional information providing apparatus includes the steps of: obtaining a received positioning signal (S610); specifying an emission source of the posit...