Method for modulating variable binary offset carrier with discrete time-variant frequency, and satellite navigation signal generator using the same

A satellite navigation signal generator performing modulation of a variable binary offset carrier (VBOC) having a discrete time-variant frequency, the satellite navigation signal generator comprising:

• a processor;
• and
• a memory storing program instructions executable by the processor,
• wherein when executed by the processor, the program instructions cause the processor to:
• generate navigation message data;
• generate a carrier;
• generate a VBOC subcarrier;
• generate a pseudo-random code;
• synthesize the pseudo-random code and the VBOC subcarrier;
• and
• synthesize a synthesized signal of the pseudo-random code and the VBOC subcarrier, the carrier, and the navigation message data.

A satellite navigation signal generator performing modulation of a variable binary offset carrier (VBOC) having a discrete time-variant frequency, the satellite navigation signal generator comprising:

• a navigation message generating unit configured to generate navigation message data;
• a carrier generating unit configured to generate a carrier;
• a VBOC subcarrier generating unit configured to generate a VBOC subcarrier;
• a pseudo-random code generating unit configured to generate a pseudo-random code;
• a first synthesizing unit configured to synthesize the pseudo-random code and the VBOC subcarrier;
• and
• a second synthesizing unit configured to synthesize a synthesized signal of the pseudo-random code and the VBOC subcarrier, the carrier, and the navigation message data.