Real-time radar signal processing using GPGPU (general-purpose graphic processing unit)

2016 ◽  
Author(s):  
Fanxing Kong ◽  
Yan Rockee Zhang ◽  
Jingxiao Cai ◽  
Robert D. Palmer
Keyword(s):  
Signal Processing ◽  
Real Time ◽  
Graphic Processing Unit ◽  
General Purpose ◽  
Radar Signal ◽  
Radar Signal Processing ◽  
Processing Unit ◽  
Graphic Processing

scholarly journals Optimal nonlinear fi ltering of stochastic processes in rescue radar

2021 ◽  
Vol 26 (3) ◽  
pp. 18-23
Author(s):  
O. Sytnik ◽  
Keyword(s):  
Signal Processing ◽  
Real Time ◽  
Markov Processes ◽  
Adaptive Filter ◽  
Optical Sensors ◽  
Minimum Mean Square Error ◽  
Radar Signal ◽  
Radar Signal Processing ◽  
Processing Unit ◽  
Signal Processing Unit

Subject and Purpose. Smoke, fog, avalanches, debris of collapsed structures and other optically opaque obstacles in both natural and man-made disasters make optical sensors useless for detecting victims. Electromagnetic waves of the decimeter range penetrate well almost all obstacles, reflect from the trapped people and return to the radar receiver. Due to the breathing and heartbeat, the human-reflected sounding signals get the Doppler phase modulation, which is an information signal. These information signals and their properties provide the subject matter for the present research with the aim to create optimal methods and algorithms of random event processing for the prompt location of survivors by rescuers. Method and Methodology. The method of stochastic analysis of the fluctuation Doppler spectra of reflected sounding signals shows that the information signals have properties of conditional Markov processes. Results. The problem of optimal nonlinear filtering of conditional Markov processes entering the radar signal processing unit has been examined closely. An optimal adaptive filter has been proposed to reduce the masking effect of interferences caused by non-stationary noises and sounding signal reflections from stationary objects. The optimality criterion is the minimum mean square error function whose current value is evaluated in real time during the filtering process as the statistics is accumulated. The filter coefficients are calculated by the recurrent, steepest descent algorithm. The real-time work is carried out through the use of fast Fourier transform algorithms. Conclusion. The structure of the optimal adaptive filter to be built into the radar signal processing unit has been developed. Real radar signals have shown that the optimal filtering during the signal processing in systems designed for detecting live people by their breathing and heartbeat facilitates the interpretation of the observed signals. Some spectra of real signals generated by human breathing and heartbeat are presented.

Partially Coherent Beam Real-Time Generation Method Accelerated by Graphic Processing Unit

2016 ◽  
Vol 45 (3) ◽  
pp. 310001 ◽  
Author(s):  
倪小龙 NI Xiao-long ◽  
刘智 LIU Zhi ◽  
姜会林 JIANG Hui-lin ◽  
陈纯毅 CHEN Chun-yi ◽  
刘艺 LIU Yi ◽  
...  
Keyword(s):  
Real Time ◽  
Graphic Processing Unit ◽  
Coherent Beam ◽  
Processing Unit ◽  
Partially Coherent ◽  
Graphic Processing

Potential of General Purpose Graphic Processing Unit for Energy Management System

2012 ◽  
Vol 3 (2) ◽  
pp. 72-82
Author(s):  
Jean-Charles Tournier ◽  
Vaibhav Donde ◽  
Zhao Li ◽  
Martin Naef
Keyword(s):  
Energy Management ◽  
Management System ◽  
Graphic Processing Unit ◽  
General Purpose ◽  
Energy Management System ◽  
Processing Unit ◽  
Server Side ◽  
And Performance ◽  
Speedup Factor ◽  
Graphic Processing

This paper investigates the potential of General Purpose Graphic Processing Unit (GPGPU) for the server and HMI parts of Energy Management System (EMS). The HMI investigation focuses on the applicability and performance improvement of GPGPU for scattered data interpolation algorithms typically used to visually represent the overall state of a power network. The server side investigation focuses on fine grain parallelization of EMS applications by targeting the sparse linear solver. The different performance evaluations show the high potential of GPGPU for the HMI part with a speedup factor up to 100 at the cost of acceptable approximations, while the benefit on the server side varies from a speedup factor of up to 300 to 0 depending on the application.

Design of PowerPC-Based Radar Universal Signal Processing Unit

2013 ◽  
Vol 760-762 ◽  
pp. 1360-1363
Author(s):  
Ji Yong He ◽  
Xiang Guang Chen
Keyword(s):  
Signal Processing ◽  
Real Time ◽  
Rapid Development ◽  
Superior Performance ◽  
Radar Signal ◽  
Time Signal ◽  
Processing Unit ◽  
Complex Data ◽  
Interface Definition ◽  
Signal Processing Unit

With the rapid development of radar system, it has put forward higher requirements in the ability of real-time signal processing, the capability of data processing and the versatility of signal processing platforms. The signal processing unit based on PowerPC processor MPC8640D can complete the calculation of complex data using the superior performance of the processor. The combination of embedded operating system VxWorks can meet the real-time requirement of the radar signal processing perfectly. Universal IO interface definition of PowerPC processors make the designed signal processing unit own excellent versatility. The use of muti-beam digital synthesis technique and the vector library in software development improves the signal processing further more.

Sign in / Sign up

Export Citation Format

Share Document