NAVIGATION SIGNAL TRANSMISSION EQUIPMENT, METHOD OF NAVIGATION SIGNAL TRANSMISSION AND LOCATION INFORMATION EQUIPMENT

摘要

1. Equipment for transmitting navigation signals provided on the ground for transmitting a navigation signal to a receiver configured to determine a location by receiving a spread-spectrum satellite position signal, comprising: first and second transmitting antennas; a message generating unit generating a message signal with location information included in said navigation signal; a modulation module modulating said message signal through a modulation process including spreading, based on spreading codes of a sequence identical to the sequence of said satellite positioning signal allocated to the aforementioned navigation signal transmission apparatus to generate first and second navigation signals, wherein : said modulation module performs said modulation process using any of said first o and the second navigation signal as a demodulation object at each reception by said receiver, said navigation signal transmitting apparatus further comprises: a transmitting module transmitting said first and second navigation signals from said first and second transmit antennas, respectively. 2. The navigation signal transmission apparatus according to claim 1, wherein said modulation module includes: a first code generating module for generating a first code from said spreading codes of an identical sequence; a first spectrum spreading module