| Popis: |
GNSS signals are easily affected by the complex urban environment, resulting in reduced navigation and positioning accuracy and poor usability. In this paper, low-cost survey GNSS receivers are used in complex urban areas to receive primitive observations such as pseudorange, carrier, Doppler, and signal-to-noise ratio. Single-point positioning, pseudorange differential, and carrier double-difference positioning modes are used for solution analysis. On this basis, the impact of the environment on the accuracy of observations is evaluated, and the impact of GNSS interference on the high-precision application of satellite navigation systems is analyzed. |
