A Kind of Dual-Channel GMTI Real-Time Processing Method Based on Frequency DPCA

2006 ◽  
Author(s):  
Longmei Xi ◽  
Changyao Zhang
Keyword(s):  
Real Time ◽  
Processing Method ◽  
Real Time Processing ◽  
Time Processing ◽  
Dual Channel

A real-time processing system for dual-channel six-degree-of-freedom grating ruler based on FPGA

2021 ◽  
Author(s):  
Ningning Shi ◽  
Shengtong Wang ◽  
Gaopeng Xue ◽  
Mengfang Liu ◽  
Yaodong Han ◽  
...  
Keyword(s):  
Real Time ◽  
Processing System ◽  
Degree Of Freedom ◽  
Real Time Processing ◽  
Time Processing ◽  
Dual Channel ◽  
Six Degree Of Freedom

A Real-Time Processing Method of Underwater Ambient Noise Spectrum Based on One-Third Octave

2013 ◽  
Vol 333-335 ◽  
pp. 522-525
Author(s):  
Chao Ma ◽  
Chun Jie Qiao ◽  
Yue Ke Wang ◽  
Shen Zhao
Keyword(s):  
Real Time ◽  
Ambient Noise ◽  
Noise Spectrum ◽  
Processing Method ◽  
Real Time Processing ◽  
Time Processing ◽  
Object A ◽  
Passive Detection ◽  
Continuous Measuring ◽  
Underwater Object

Extended, continuous measuring and analysis for underwater ambient noise can find the objects like ships and submarine. It is important for passive detection of underwater object. A real-time processing method of one-third octave spectrum is presented. It is shown by tests that the method is steady and satisfy the real-time processing.

scholarly journals An Efficient Dual-Channel Data Storage and Access Method for Spaceborne Synthetic Aperture Radar Real-Time Processing

Electronics ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 662
Author(s):  
Guoqing Wang ◽  
He Chen ◽  
Yizhuang Xie
Keyword(s):  
Synthetic Aperture Radar ◽  
Real Time ◽  
Data Storage ◽  
Hardware Architecture ◽  
Synthetic Aperture ◽  
Access Method ◽  
Real Time Processing ◽  
Time Processing ◽  
Dual Channel ◽  
Data Controller

With the development of remote sensing technology and very large-scale integrated circuit (VLSI) technology, the real-time processing of spaceborne Synthetic Aperture Radar (SAR) has greatly improved the ability of Earth observation. However, the characteristics of external memory have led to matrix transposition becoming a technical bottleneck that limits the real-time performance of the SAR imaging system. In order to solve this problem, this paper combines the optimized data mapping method and reasonable hardware architecture to implement a data controller based on the Field-Programmable Gate Array (FPGA). First of all, this paper proposes an optimized dual-channel data storage and access method, so that the two-dimensional data access efficiency can be improved. Then, a hardware architecture is designed with register manager, simplified address generator and dual-channel Double-Data-Rate Three Synchronous Dynamic Random-Access Memory (DDR3 SDRAM) access mode. Finally, the proposed data controller is implemented on the Xilinx XC7VX690T FPGA chip. The experimental results show that the reading efficiency of the data controller proposed is 80% both in the range direction and azimuth direction, and the writing efficiency is 66% both in the range direction and azimuth direction. The results of a comparison with the recent implementations show that the proposed data controller has a higher data bandwidth, is more flexible in its design, and is suitable for use in spaceborne scenarios.

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