基于双DSP的信号处理板的设计及其在SAR信号仿真中的应用

针对SAR信号仿真系统高速实时数据处理和传输的要求,本文设计并实现了基于双DSP结构的高性能实时信号处理板。该板使用两片TMS320C6416作为信号处理核心和数据流控制中心,使用PCI-PCI桥接芯片PCI2050B对PCI总线进行了扩展,并使用两片FPGA实现了内部高速互联通道和外部LVDS高速接口,具有很强的可重构性和可扩展性,并可在多种模式下工作。实测结果表明,该设计可完全满足SAR信号仿真的性能需求。

Design of Signal Processing Board Based on Dual-DSP Scheme and Its Application in SAR Signal Simulation

Focusing on the demand of high- speed and real- time data processing and transmission in SAR signal simulation systems, we devised and implemented a powerful real - time signal processing board based on dual - DSP scheme. In the board dual TMS320C6416 DSPs are used as the signal processing core and data transfer controller, with a PCI- PCI Bridge PCI2050B utilized to extend the PCI bus and two FPGAs employed to establish an ultra- high data path between two DSPs and interface the outside world via LVDS buses. With the affluent intra- connecting and inter- connecting resources the board is highly scalable and reconfigurable, which could work in multiple modes. As a typical application, the board is used as a SAR signal simulator and experiments demon- strate that it meets the needs of the SAR simulation system.