PMID- 33362088
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20201229
IS  - 1539-4522 (Electronic)
IS  - 1559-128X (Linking)
VI  - 60
IP  - 1
DP  - 2021 Jan 1
TI  - Hybrid PO-SBR-PTD method for composite scattering of a vehicle target on the 
      ground.
PG  - 179-185
LID - 10.1364/AO.412893 [doi]
AB  - In this paper, a hybrid method of physical optics (PO) shooting and bouncing ray 
      (SBR) physical theory of diffraction (PTD), is adopted to investigate the 
      composite scattering of a vehicle target on the ground. Where the scattering of 
      ground is calculated by the PO method, the scattering of the vehicle target is 
      computed by the SBR-PTD method, and the mutual couplings between them are solved 
      by the ray tracing technique. In addition, an octree data structure is used to 
      accelerate the ray tracing progress. A forward-backward ray tracing technique is 
      employed to ensure the accuracy of the illuminated facet identification. In 
      numerical simulation, the monostatic and bistatic scattering of a reduced-scale 
      vehicle target are calculated by the SBR-PTD method and compared with the 
      simulation results with the multilevel fast multipole method (MLFMM) in 
      commercial software FEKO. And the composite scattering from a reduced-scale 
      vehicle target on the planar ground by our PO-SBR-PTD method is also compared 
      with the MLFMM. The results show that our methods can greatly reduce the 
      computational time and memory requirement while keeping a satisfactory accuracy. 
      Finally, the composite scattering from the vehicle target on the rough ground is 
      demonstrated and analyzed for different incident parameters.
FAU - Li, Juan
AU  - Li J
FAU - Zhao, Lei
AU  - Zhao L
FAU - Guo, Li-Xin
AU  - Guo LX
FAU - Li, Ke
AU  - Li K
FAU - Chai, Shui-Rong
AU  - Chai SR
LA  - eng
PT  - Journal Article
PL  - United States
TA  - Appl Opt
JT  - Applied optics
JID - 0247660
SB  - IM
EDAT- 2020/12/29 06:00
MHDA- 2020/12/29 06:01
CRDT- 2020/12/28 11:53
PHST- 2020/12/28 11:53 [entrez]
PHST- 2020/12/29 06:00 [pubmed]
PHST- 2020/12/29 06:01 [medline]
AID - 445016 [pii]
AID - 10.1364/AO.412893 [doi]
PST - ppublish
SO  - Appl Opt. 2021 Jan 1;60(1):179-185. doi: 10.1364/AO.412893.