Abstract: The low-cost navigation module has broad application prospects in power infrastructure construction, power inspection and other fields. The quality of its observation data mainly depends on the quality of the receiving antenna and the condition of the observation environment. This paper evaluates and analyzes the double-difference positioning results of different receiving antennas and low-cost navigation module combinations, and qualitatively analyzes the positioning quality of different receiving antennas and low-cost navigation module combinations. In static relative positioning, the double-difference ambiguity resolution effect of observations obtained by using a combination of a low-precision antenna and a low-cost navigation module is equivalent to that of using a combination of a high-precision antenna and a low-cost navigation module, and there is no significant difference in double-difference pseudorange residuals. For static power high-precision positioning applications such as tower tilt and address settlement, low-precision and low-cost antennas can be appropriately selected to reduce costs. The analysis results will provide guidance for the large-scale application of BDS and other navigation satellite positioning modules in the power industry.