Application of ranging technique of radar level meter for draft survey

  Objectives  This paper aims to solve the problems of the high subjectivity and low accuracy and efficiency of draft surveying relying on human visual inspection.

  Methods  Radar-level oil and liquid measurement technology products are widely used in the petrochemical industry. A device is developed that uses radar to survey the draft of a boat, designed with data series optimization formulae to ensure that the data results are true and correct. At the same time, a test is designed to prove the accuracy of the results.

  Results  According to the conditions of the ship, the device is composed of a radar sensor, triangular bracket and display, and is put to use in the test.

  Conclusions  With 15 vessels as the research objects, the comparison experiment shows a difference in range between 0.001-0.022 meters, with an average difference rate of 0.028%, which meets the requirements for ship draft survey accuracy.