| With the development of wireless communication technology, its applications are more widely used, not only in civil field but also in military and defense fields, so the power of antenna system have higher requirements. In the process of shortwave communication, it usually requires the use of certain anti- interference means to ensure communication quality. And the most commonly used is the spatial power synthesis technology, of which the high-precision phase is an important indicator. Aiming antenna array phase shifting signal, to complete the high-precision detection and signal quality analysis, the paper’s work are:1. For mainstream phase detection methods ’ defect, the paper analysis and verification the phase shift characteristics and the phase detection technology of the network antenna array system, combined collecting data computing use Tie Pie HS5-530 from Netherlands with AD8302 phase difference detector circuit hardware to achieve the system function. The hardware circuit transform phase difference information into level information and the result is transferred to the host computer via serial communication. Then we get the result of phase difference by curve fitting the data from hardware and the processing result of sampling data unified.2. To build the hardware platform, the main work of the paper includes custom IPC and connecting layout of interior functional modules, data acquisition module’s characteristics and development needs, the hardware phase difference detection circuit, determine the overall framework of the hardware system, the final completion of the hardware the overall design of the system.3. In the process of data processing the paper mainly to implement the sampling and analysis of the antenna RF signal processing, including FFT, waveform reduction, spectrum analysis, phase difference detection, the results display, etc. To achieve automated sampling and analysis of phase characteristics, and obtain the high-precision results of phase difference between multi-channel signal(± 1 °). In addition, this paper implements the signal waveform and spectrum display function in the results of the program’s display interface. At the same time the signal quality ana lysis results are displayed in the respective regions, including the signal frequency, amplitude, SWR andthe phase difference between the signals. We also another hint reflect real-time information on the system running. This system extends the remote control functions under the main functions have been completed. The user can log in a remote client to control the system’s function through the IE, and store the resultant data received by TCP/IP communication protocol.4. After the completion of the entire system design, we did a series of routine tests according to the indicator of the project to test the system as a whole, then analysis the accuracy of each group of test data results, the preliminary test results show that the present system are able to meet the requirements in a variety of harsh environments simulated. Finally, the paper validate the test that remote communication capabilities of the system, and the system can control the execution platform in IE side through a network remote control program of antennas, we can see the network capabilities of the system can also meet the requirements.However, there are shortcomings in the system designed by this paper. First, the database system design is not perfect, da ta storage management functions have to be improved. In addition visual effects of the program execution interface also needs further landscaping. |
PDF Full Text Request