Design And Implementation Of Man-pack UWB Frequency Jammer

The subsjct of this paper is a new generation of meter wave active phased array radar, and the substance of this project is about flatness analysis and detection accuracy of the antenna array. Compared with conventional radar, the structure of the antenna is irregular, and the working environment is more complex, and the technical requirements are higher, among which the accuracy of the antenna reflector is one of the important indexes. In order to reduce the lead time of the product, the finite element method is used to analyze the deformation of the antenna in the assembly process above all, which provide important basis on assembly scheme design, assembly platform construction, support device design and detection scheme.Firstly, the antenna structure and composition characteristics are analyzed. According to the real environment of the antenna in the process of assembly,(mainly suffered from gravity, wind, temperature,)the finite element model of the array antenna is built by MSC Patran. The deformation of antenna in different assembly environment and pose is analyzed, and four kinds of typical cases are established, ultimately nephogram data are calculated.Secondly, according to the simulation analysis data, combined with the final accuracy of the antenna, the antenna assembly scheme is designed, which ensures that the antenna is in a more realistic state in the assembly process.Finally, according to the assembly platform and the existing resources of enterprise, the flatness is detected by using the method of level and height measurement. With electronic total station and laser tracker system, the accuracy of array plane array is detected, and the actual height difference between the various sub units is found out.The accuracy of the model is consistent with the results of finite element analysis. The analysis results show that the accuracy of the finite element model and the feasibility of the analysis are verified. So the results of finite element analysis can be used in the process design of antenna manufacturing process, which can meet the requirements of process design, and can reduce the lead time of the product.