Development Of An Real-time Signal Processor For Missile-borne MIMO Radar

Compared with traditional phased array radar,MIMO(Multi-Input Multi-Output)radar has obvious advantages in target detection,parameter estimation,interference suppression and low interception.MIMO radar will become the research hotspot of the next generation of precision guided weapon technology because of its superior performance.Therefore,the development of missile-borne MIMO radar real-time signal processor has important research value.The main work done in this paper is as follows:Using a heterogeneous reconfigurable computing architecture,a high-performance,lowpower,small-scale missile-borne MIMO radar real-time signal processor with multi-board coordination is designed,including 12-channel high-speed D/A signal generation boards.12-channel high-speed A/D signal acquisition pre-processing board,high-performance FPGA+ multi-core DSP parallel processing board and high transmission bandwidth data adapter board complete 12-channel A/D and D/A high-precision synchronous design.Aiming at the problem of online calibration of multi-channel amplitude and phase consistency,the source of synchronization error between channels is studied.The influence of amplitude and phase inconsistency between channels on MIMO radar signal processing algorithm is analyzed by modeling and simulation.At the same time,according to the principle of amplitude and phase error calibration of narrowband signals,the software design and function realization of online calibration and compensation are completed,and the amplitude and phase consistency between the transceiver channels is improved.According to the working sequence of the missile-borne MIMO radar,the program framework of the signal processor and each missile-based extension is constructed.The radar timing master program and the signal processing underlying BSP(Board Support Package)board-level support package are developed.The MIMO radar IF signal preprocessing function completes the hardware integration,debugging and functional verification of the signal processor.