Abstract: An apparatus that can transmit a signal enabling higher accuracy of calculating positional information is provided. A transmitting apparatus transmitting a positioning signal includes an oven controller crystal oscillator (OCXO) having a thermostatic oven that keeps the temperature of a quartz resonator constant and oscillates such that variation in output frequency caused by the ambient temperature change is minimized, a voltage controlled oscillator (VCO) outputting a signal modulated in accordance with the signal from OCXO, multipliers, a code generator outputting code patterns for respectively identifying each of artificial satellites on which the transmitting apparatus is mounted to multiplier, a memory storing a navigation message, a transmitting portion, and an antenna.

Abstract: A system for transmitting time-synchronized signals for positioning is provided. The system for transmitting positioning signals includes a transmitting apparatus mounted on artificial satellite, a repeater mounted on an artificial satellite, and a repeater mounted on an artificial satellite. Positional relation among artificial satellites is specified beforehand. Transmitting apparatus transmits a signal generated by encoding using a code identifying itself. Repeater receives a signal from the transmitting apparatus and transmits the signal. Repeater receives a signal from the transmitting apparatus and transmits the signal. The signals transmitted from the transmitting apparatus and repeaters and are received by receiving apparatuses and having the function of receiving the signals.

Abstract: A system for transmitting time-synchronized signals for positioning is provided. The system for transmitting positioning signals includes a transmitting apparatus mounted on artificial satellite, a repeater mounted on an artificial satellite, and a repeater mounted on an artificial satellite. Positional relation among artificial satellites is specified beforehand. Transmitting apparatus transmits a signal generated by encoding using a code identifying itself. Repeater receives a signal from the transmitting apparatus and transmits the signal. Repeater receives a signal from the transmitting apparatus and transmits the signal. The signals transmitted from the transmitting apparatus and repeaters and are received by receiving apparatuses and having the function of receiving the signals.

Abstract: A system for transmitting time-synchronized signals for positioning is provided. The system for transmitting positioning signals includes a transmitting apparatus mounted on artificial satellite, a repeater mounted on an artificial satellite, and a repeater mounted on an artificial satellite. Positional relation among artificial satellites is specified beforehand. Transmitting apparatus transmits a signal generated by encoding using a code identifying itself. Repeater receives a signal from the transmitting apparatus and transmits the signal. Repeater receives a signal from the transmitting apparatus and transmits the signal. The signals transmitted from the transmitting apparatus and repeaters and are received by receiving apparatuses and having the function of receiving the signals.

Abstract: An apparatus that can transmit a signal enabling higher accuracy of calculating positional information is provided. A transmitting apparatus transmitting a positioning signal includes an oven controller crystal oscillator (OCXO) having a thermostatic oven that keeps the temperature of a quartz resonator constant and oscillates such that variation in output frequency caused by the ambient temperature change is minimized, a voltage controlled oscillator (VCO) outputting a signal modulated in accordance with the signal from OCXO, multipliers, a code generator outputting code patterns for respectively identifying each of artificial satellites on which the transmitting apparatus is mounted to multiplier, a memory storing a navigation message, a transmitting portion, and an antenna.

Abstract: The locations of pseudolites and the location of a stationary reference station are previously known by a user processing unit, and codes and carrier phase of signals transmitted from the pseudolites are measured by the stationary reference station, a moving reference station and a rover receiver. Data of the codes and the carrier phase measured by the stationary reference station, the moving reference station and the rover receiver are transmitted to the user processing unit using a data link. The user processing unit determines a baseline between the stationary reference station and the moving reference station, and a baseline between the moving reference station and the rover receiver. The two baselines and the previously known location of the stationary reference station are employed to determine the position of the rover receiver.