Method of a sighting device adjustment by fixing the machine position with angle-measuring instruments set on base line endings

Abstract

In this paper described the similar method of sighting device adjustment that demands shorter route: about 500 m length. Reducing the length in general case would increase the impact of errors of positioning the sighting device at start and end points to the error of determining the misalignment angle between pointing line of sighting device and machine's center line. Therefore, it is necessary more accurately locate the vehicle's sighting device on start and end points of the route. Here is proposed to position sighting device in the initial and final position by angle measurement instruments installed on the basis; this basis of length about 200 m optimally should be positioned perpendicularly to the route. The authors proved that shortening the route to 500 m with positioning the vehicle's sighting device by method proposed would not increase the error of determining the misalignment angle between pointing line of sighting device and vehicle's center line.To determine the orientation of the vehicle's center line relatively to «starting point – endpoint» line they measure with the sighting device the angles between the vehicle's center line and line to angle measuring device located on the one of basis ending in the starting and end points. This will enable: 1) to determine conditional grid azimuth from the initial to the final point, 2) to transform values of «X» and «Y» counters to those that would be obtained at zero grid azimuth from the initial to the final point and 3) calculate the misalignment angle between pointing line of sighting device and machine's center line with formula (1).It should be noted that the proposed method allows simultaneous APADS adjustment of several vehicles of a subunit, which reduces the time and fuel consuming without reducing the accuracy of adjustment.