Design And Implementation Of Control System For Microwave Antenna Alignment Platform

As the base of modernized battel command system, communication equipment has become a key part and an important guarantee in electronic warfare and information warfare in the 21st century. With the advantages of high frequency, broad band, enormous information and great adaptability of enviroment, microwave communication is widely used in the field of communication and has been increasingly equipped the army. It is important to study microwave antenna alignment technology and develop its automatic alignment equipment to ensure the stability and reliability of the microwave communication, which is of great importance for improving the army's battle command system. This paper, based on certain microwave antenna alignment platform, develops a kind of microwave antenna alignment platform with the advantages of quick alignment, high-precision and good real-time performance.The main work is organized as follows:1. The structure and function of the system are introduced. The total scheme of the control system is designed, which consists of an embedded hardware system with the core of TMS320LF2407 DSP and a software system based on the real-time kernel uC/OS-II.2. By analyzing the functions of the system, the hardware system of pan-tilt-zoom is designed by modular. It presents the functions, principle and exact implementation of every hardware circurit in detail. In process of design, the author made a deep research with regard to the problems of nonlinearity and isolation method of AGC signal.3. Considering the application of microware antenna alignment platform in moving carrier, the RTOS uC/OS-II kernel is applied as the software platform. Then, the scheduling of multi-task is implemented by mailbox and interrupt.4. The whole system is tested indoors and outdoors. The process of test is described and the test datum are analysed. The result of the test proves that all the functions and the main specification of control system are satisfied the system requirement.The specimen of certaim microwave antenna alignment platform has been successfully developed,that is the foundation of development of communication equipment in future. It also supports technique for development of wideband communications in the military field. Furthermore, the control system of pan-tilt-zoom supplies references to directing mechanism in industrial control field.