Photoelectric tracker act on shorted distance to sea and coast
limiting the extend application.From handling the probing equation of the infrared radiation system and combining the test of range
the methods for raising the affect distance under air humidity
temperature
ground visibility such as improved condition of the equipments fixed and strengthen infrared objective and so on are advanced.It had settled the puzzel for ship weapon of middle-short distance adjustment firing error.It has been used in photoelectric tracker set up and troops of trained and military operation.