Research for the local modification to an imported large-sized antenna test system

The article describes the composition,application,working principle,and working features of a large antenna far-field measurement system imported from Israel.In order to overcoming the shortages of the original system such as insufficient margin for designed power and difficult maintenance etc,the author redesigns and makes power control unit based on the system's performance index and customers'requirement,Through the software compiled by C programming language for interface control that run on a industry-control computer,the new power control unit is compatible with the original system and can be embeded in it.So all the functions of the original system have been realized finally.It is proved after acceptance test and practical application that the new system has been improved in operation,maintenance,dependability, and safety.It could meet the system performance index and customersrequirement,and has certain economic value.