The Research On The Spectral Testing Of Radar Signal And Its Software Implementation

With the improvement of science and technology, the development of new technology and the improvement of the system make the performance of radar become better and better, and also put forward higher and more challenging requirements for radar testing. With the help of real-time spectrum analyzer, the working mode of "trigger capture- storage- Analysis", the multi- domain event correlation analysis and observation of wide band pulse can be realized.In this paper, based on the requirement of radar signal test, the traditional radar pulse test method and the radar signal processing algorithm are analyzed. By comparing and summarizing the corresponding algorithms for different environments and situations, the method of LFM signal processing is summarized and improved, which is suitable for the practical engineering field.According to the existing hardware equipment combined with previously on a variety of radar signal processing algorithm research, to need to be solved urgently in scientific research in all tested indicators for software function demand, this center launched radar signal test and analysis of the overall design of the software. In the overall scheme of the design and development of software, mainly for radar signal test analysis software is analyzed and the analysis of function demand and performance demand, research on key technology of frequency double buffering technology, Qt development environment under the signal and slot mechanism and signal also in the process also to each module of the software development and Realization of the key technologies are studied, which include.After the completion of the overall design of the software, according to the scheme is proposed in detail for each module of the software realization method of module development, which mainly include data communication module, waveform analysis module, a data judgment module, data analysis module and the keyboard interface module. In the process of this paper introduces the development of each module, and the realization of the key steps, such as data communication module is to rely on the HPI hardware interface with DSP hardware communication of and keyboard interface module is how to pass on the arm of the TTL serial based up the design and implementation, and waveform analysis module is the waveform based on QT platform of third party application library Qwt library refresh and drawing and relevant data read and display.After the completion of the detailed implementation of radar signal test and analysis software. In this paper, the the linear frequency modulation(LFM) signal and triangle wave signal of radar signal test analysis software function test, to verify whether meet the functional requirements proposed in previous software overall design and development program. Then, according to the related standards of software performance testing of software stability, reliability and other related software performance testing, to verify whether or not to meet the performance requirements of above software overall design scheme is proposed in.