The invention relates to a method and
system for calibrating the parallelism of an incongruous turning
light pipe based on double-mirror splicing. The method comprises the following steps: step 1, setting a
system; step 2, adjusting
azimuth angles and
pitch angles of reflectors of the first
plane mirror device and the second
plane mirror device through the same high-precision gyro
theodolite respectively, so that north orientation values L and
pitch values I of the two reflectors are the same, and double-mirror splicing is realized; step 3, setting a to-be-measured incongruous
reflex light tube, using the high-precision gyro
theodolite in the step 2 to measure an orientation value L1 and a pitching value I1 of the reflector of the second plane reflector device, keeping the position of the high-precision gyro
theodolite unchanged, rotating a sighting part, measuring an
azimuth value L2 and a pitching value I2 of a reflector of the first plane reflector device by using a high-precision gyro theodolite through the incongruous
reflex light tube to be measured, and calculating an
azimuth error
delta L and a pitching error
delta I according to a formula 1:
delta L = L1-L2-180 degrees and a formula 2: delta I = I1 + I2-2ia-180 degrees.