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Based on embedded Linux system, data transmission system for weapon's exterior ballistic speed measurement radar is studied based on the ARM Cortex-A9, communication interface is designed based on ARM and FPGA, the specific hardware design and the character device driver design are proposed, using interrupts and DMA technology. Data can be transferred high-speed and correctly, the test result shows...
Doppler radar real-time signal processing is one of the core equipment in the speed measuring system. The working principle is presented in this paper, and an efficient real sequence FFT algorithm is proposed based on the Fast Fourier Transform, which can reduce the computation complexity effectively. The design with low cost FPGA implementation, high performance, high flexibility, speed and other...
On-orbit single event effect error rate is predicted combining accelerated radiation test and space radiation environment model for a FPGA-based signal processing platform. With partial TMR and reconfiguration mitigation method, there is no single event latch is observed when the surface linear energy transfer of heavy ion is 99.8 MeV.cm2/mg, and the error/SEU ratio is 4.7431e-004. Error rate of four...
To evaluate the total ionizing dose vulnerability of spaceborne signal processing platform, an accelerated radiation experiment is set up and on-orbit prediction method is proposed. For signal processing platform which consists of SRAM-based FPGA and DSP, function parameter and current variety are the two criterion of experiment. 60Co γ radial radiation experiment indicates that total dose is about...
Optical Character Recognition (OCR) is an important area of pattern recognition. Automatic OCR system is one kind of intelligent system which is very important to the current automation systems such as ATMs. In this paper, a RMB OCR (ROCR) system is implemented using FPGA, which consists of Character Segmentation (CS) module and OCR module. The CME M7 was used for the implementation. 83.30% Logic...
Radar signal simulation technology plays an important role in the development, performance and evaluation testing stage of modern radar systems. This paper focuses on the design principles and hardware components of a wideband radar signal simulator based on high-speed DDS technology and Compact PCI bus. The result of joint commissioning between computer software and hardware system shows that this...
Nowadays the weak signal detection technology is necessary in scientific research field, in which the phase-locked amplifying technology is widely used in the field of weak signal detection because it can meet the requirements of high speed and high accuracy. System Generator software is adopted as a tool since System Generator can make the design more conveniently and efficiently. The design of each...
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