The Experiment And Implement Of Squint SAR Real-time Imaging Based On Multi-chip TMS320c6678s

Synthetic aperture radar(SAR) is widely used in military and civilian fields. With the development of digital signal processing technology and the synthetic aperture radar imaging algorithm, the real-time processing of SAR echo and high-resolution imagery become the new research directions.This paper focuses on the experiment and implement of squint SAR real-time imaging based on multi-chip multicore TMS320C6678 s. First, we introduce the SAR imaging algorithm, in order to meet the requirements of real-time processing of high squint SAR, our hardware system is based on FPGA and multi-chip multicore DSP.This paper presents the design of SAR imaging algorithm based on a multi-core DSP. First, we parallelly design the algorithm for 8 cores. Including how to achieve inter-core communication and coordination task allocation. Then we introduce the management of memory in the project, including the configuration of CMD file and memory alignment. We present the application of SYS-BIOS, including the distinction between SYS-BIOS and traditional embedded systems, thread scheduling of SYS-BIOS, XDCTools and the memory management of SYS-BIOS. Finally we introduce code optimization and programming skills, including the language features in CCS, programming examples and the various components of the project.This paper presents a design of real-time imaging system based on multi-chip DSP. First, we introduce the signal processing boards used in the project, including the overall structure and the link topology. Then we show the data transmission and the design of interface application, including the design of data flow based on car experiment and aircraft experiment. Then we present the algorithm on the hardware system, including the design of algorithm structure based on FPGA and the structure based on multi-chip DSPs. We present the interrupt application, including the structure, principles of DSP interrupt system and its application in the project. Next, we introduce the management and allocation of memory resources in this project according to the design of the data transmission. The experiments based on car and aircraft data validate our design of thesystem.