Research On Signal Processing Platform And Display System Of Multi-channel See-through-building Radar

The Multi-channel see-through-building radar uses the specific frequency ultra-wideband electromagnetic signals to achieve the real-time detection and tracking of moving targets imaging in the buildding and the layout of the buildings. In this design, in order to improve the azimuth resolution, The Multi-channel see through building radar uses the two-transmit-eight-receive antenna array. Two transmit antennas transmit timeshare. Finally it Equivalent to sixteen-receive real aperture antenna array. Currently, the radar has been used in fire fighting and rescue, police enforcement, counter-terrorism and other fields, It as great practical value.Aiming at the Multi-channel see-through-building radar miniaturization, portability trends, this paper proposes a singal processor design based on FPGA + DSP and a display and control terminal design based on embedded platforms.Designed and implement its main functions.The main tasks of this pape are as follows:1. For functional requirements of the Multi-channel see-through-building radar ’s signal processor, this paper designs the whole embodiment of the signal processor; and based on the design and the data transmission, processing capacity size, it completes selection of the main signal processor chip FPGA and DSP. On this basis, it completes the programming of FPGA and DSP,and transplantion of BP imaging algorithm.Finally completes the data transmission interface design.2. For the requirements for display and control system,it completes a design of a display and control terminals which is based on embedded platform. According to this design, it completes the selection of embedded operating system and the main core chip. On this basis, it completes the migration of embedded Linux operating system,and the programming of the screen and the interface driver. It completes a HCI graphical window interface.It not only achieve the results of through wall imaging detection, but also to set the parameters.3. Based on the Multi-channel see-through-building radar signal processor and the display and control terminal system platform, combined with transmitting and receiving antennas,transmitter,receiver and system acquisition module,it tests and debugs the system.It tests the accuracy of the data transmission between the FPGA and DSP, the validation of BP imaging algorithm transplant, the accuracy of the data transmission between the DSP and ARM, the verification of real-time imaging of the display and control system and so on. According to the above experiment, you can verify the entire signal processor data processing and algorithm transplant correctly. The entire system platform has small and portable features.It can moved with the radar platform easily and it can complete the task of detecting the moving objects and imaging.