Paper Info
Title
GPU-based Calculation for Scattering Characteristics of Complex Targets from Background Radiance in Infrared Spectrum
Abstract
Scattering聽characteristic of complex targets from sky and ground background radiance plays an important role in engineering fields. Firstly, a 5-parameter BRDF (Bidirectional Reflectance Distributional Function) model is introduced. Then MODTRAN is used to calculate the background radiance in infrared spectrum of 3-5 um and 8-12um bands. Considering the background radiance comes from all directions of space in large numbers of different bands, there will be multiple loops in the computation thus it's quite time-consuming. Thanks to the NVIDIA CUDA (Compute Unified Device Architecture), programing GPU does not require as much knowledge about graphics card and complex programing interfaces as before. On the basis of CUDA, a parallel implementation is presented and to get a higher speedup the code is optimized to reduce the access latency as much as possible by using the shared and constant memory on GPU. The implementation is test on an NVIDIA GTX GeForce 480 and 2.79 GHz Intel i7 CPU. Compared to the CPU implementation, we achieve a peak speedup of 308 and results showing the efficiency of the parallelism and optimization.
Year
DOI
Venue
2012
10.1109/ICPADS.2012.145
ICPADS
Keywords
Field
DocType
complex programing interface,background radiance,scattering characteristics,cpu implementation,parallel implementation,nvidia gtx geforce,complex targets,nvidia cuda,higher speedup,ghz intel i7 cpu,gpu-based calculation,complex target,infrared spectrum,ground background radiance,brightness,parallel programming,scattering
Bidirectional reflectance distribution function,Graphics,MODTRAN,Central processing unit,Computer science,CUDA,Parallel computing,Radiance,Speedup,Computation
Conference
ISSN
Citations 
PageRank 
1521-9097
0
0.34
References 
Authors
2
6
Name
Order
Citations
PageRank
Xing Guo174.52
wu21910.80
Longxiang Linghu300.68
Yufeng Yang401.69
Yunhua Cao501.69
Jiaji Wu613722.60