This transmitting system can analogue the change of spot viewing angle recepted by seeker what guidance apparatus recept,realize the imitation of laser homing guidance.

PurposeThis experimental use of optical coherence tomography(OCT) measuring the angle between the optic disc and macula lutea of the health human eyes of the different age groups and analysising its relations with eyes of other,age,sex.

It is found that laser beam size has an important influence on the tempe.

In the paper we introduce the structure,operational principle and critical skills of the testing system for the laser beam through atmosphere.

To measure the laser facula in the far field using detector array,three requirements-laser energy density,the size of the array and the space be- tween detectors,are analyzed in the paper.

According to this model,the parallel misalignment and angular misalignment can be calculated so long as light spot coordinate of PSD at two discretionary angles is measured.

The theoretical relation of position signal with the light spot is provided, and thus the tendency of experimental position signal contracting to the center of PSD gets good explanation when combined with background light.

The method can confirm the Gaussian distribution of optical intensity for the fundamental transverse mode of the He-Ne laser and determine the size of its light spot.