In order to simply and reliably obtain accurate timing synchronization among different devices, the paper investigates the key technology for the information procession based on global navigation satellite system (GNSS) common view method. By the Kalman filter, the direct digital frequency synthesis, and the precise frequency phase shift technology, high-precision time signals and frequency signals are provided, which include the standard frequency signal 5 MHz/10 MHz and the 1pps and serial time code data, and so on, and both the short baseline and ultra-short baseline experiments are taken to show that the time synchronization accuracy is better than 12ns and 10ns, respectively, and the standard frequency signal stability achieves at 2×10-12/s. The testing results show that the method can eliminates the common observation error caused by the time difference jumping for the single station mode.