Research on Elevation Survey Method of Sea-Crossing Bridge under Adverse Conditions

Aiming to survey scenarios of offshore projects with difficult horizontal elevation transmission and long-distance, all-weather monitoring operations, a total station, trigonometric leveling based on dynamic compensation is proposed. The feasibility this method was verified by an outdoor experiment, the range transverse coverage accuracy reached quantitatively analyzed. results indicate that shows good correction effect test points under different environmental conditions, which proves feasible. affected distance between point datum point; within 60 m horizontally from point, assurance rate about 90% can be achieved for error 20 mm. Combining built-in ATR (Automatic Target Recognition) technology make result reach millimeter level 1000 m, obtaining multiple groups data then calculating mean value. This paper provides new transfer sea-crossing bridges long-distance conditions harsh conditions.