Design And Implementation Of System Control Software (Version 2.0) For Antenna Near-field Measurement System And Monitoring And Control Software For DBF

This thesis includes two parts,the first part is the design and implementation of system control software(version 2.0)for antenna near-field measurement system.There are two ways to measure the radiation characteristics of antenna,the near-field measurement and the far-field measurement.The traditional far-field measurement has the disadvantages of low precision,long test cycle,high scientific research funds,low test efficiency which near-field measurement is very good to solve the deficiency of the measuring methods of the far field.The near-field measurement performs better in strong anti-interference ability,high work efficiency,and the advantages of high testing precision,strong ability in analysis,which has become a popular and high precision measurement of antenna technology in the international.Hardware part of the antenna near-field measurement system includes a high-precision three-dimensional sampling module,an ultra-wide-band microwave module,and synchronization-signal controller module.The system control software(version 2.0)is composed of many modules.The function requirements of each module and achieve process will be introduced detailed in the paper.For example,the high-precision three-dimensional sampling module has the function of interlock mechanism.The ultra-wide-band microwave module has the function of external trigger mode.The synchronization-signal controller module has the function of transmitting the signal.The most core part of the system is the overall task linkage test module,which control controls the various modules to coordinate the work and obtain real-time data of the antenna near field.Eventually,collecting and recording for the near field data at a high speed,operating and analyzing for the near field data at a high precision,evaluating comprehensive on the performance of antenna has been realized.The software had through the final acceptance of a certain institute.The second part is the design and implementation of monitoring and control software for DBF systems.We know that a phased array antenna array consists of many sub arrays,which have many channels in each sub array.The phased array antenna is composed of many components,which due to continuous work for a long time may be damaged and be effected the amplitude and phase values of the channel,caused channel disorder and worked effectively,which ultimately affects the radiation characteristics of the antenna.Therefore,it is urgent to use an antenna monitoring system to monitor the amplitude and phase of each channel in the antenna array and the working state of the components.By comparing the real-time monitor the status information with the data of the original antenna radiation,technical personnel or maintenance personnel will locate the fault location,in order to maintain the good performance of the antenna.In order to ensure that technical personnel or radar operation and maintenance personnel by using the software to detection and location of phased array antenna element,accurately control the running of DBF simulator,monitor DBF module hardware working status,monitor array input data status,monitor DBF operation status,monitor DBF output results,solve the problem which emerging at each stage in the laboratory design,darkroom design,infield outfield,improve the test efficiency of each stage,without the DBF engineers on the premises.