Physical Optics Radiation Integrals with Frequency-Independent Number of Division utilizing Fresnel Zone Number Localization and Adaptive Sampling Method

2014 ◽  
Vol E97.C (12) ◽  
pp. 1134-1141
Author(s):  
Takayuki KOHAMA ◽  
Makoto ANDO
Keyword(s):  
Adaptive Sampling ◽  
Sampling Method ◽  
Fresnel Zone ◽  
Physical Optics ◽  
Independent Number ◽  
Frequency Independent

scholarly journals An UWB Physical Optics Approach for Fresnel-Zone RCS Measurements on a Complex Target at Non-Normal Incidence

Sensors ◽  
2019 ◽  
Vol 19 (24) ◽  
pp. 5454
Author(s):  
Ilie Valentin Mihai ◽  
Razvan Tamas ◽  
Ala Sharaiha
Keyword(s):  
Cross Section ◽  
Fresnel Zone ◽  
Normal Incidence ◽  
Radar Cross Section ◽  
Physical Optics ◽  
Fast Method ◽  
Field Zone ◽  
Fresnel Region ◽  
Receiving Antenna ◽  
Complex Target

In this paper, we propose a fast method for measuring the radar cross section of a complex target at non-normal incidences and Fresnel region antenna-to-target distances. The proposed method relies both on the physical optics approach and on averaging the field distribution over the transmitting and receiving antenna apertures. The ratio between the analytical expression of the radar cross section at far-field and Fresnel region results in a field-zone extrapolation factor. The RCS resulting from the scattering parameters measured at Fresnel region distances is then corrected with that field-zone extrapolation factor. The method is suitable to be used in a perturbed, multipath environment by applying the distance averaging technique, coupling subtraction or time gating. Our technique requires a very simple measuring configuration consisting of two horn antennas and a vector network analyzer. The experimental validation of the proposed technique demonstrates reasonable agreement with simulated radar cross section at non-normal incidence.

A hydrodynamic prediction model of throttle orifice plate using space filling and adaptive sampling method

2020 ◽  
Vol 62 (3) ◽  
pp. 1563-1578
Author(s):  
Tengfei Tang ◽  
Gang Yang ◽  
Dijia Zhang ◽  
Lei Lei ◽  
Baoren Li ◽  
...  
Keyword(s):  
Prediction Model ◽  
Adaptive Sampling ◽  
Sampling Method ◽  
Orifice Plate ◽  
Space Filling

An adaptive sampling method for variable-fidelity surrogate models using improved hierarchical kriging

2017 ◽  
Vol 50 (1) ◽  
pp. 145-163 ◽  
Author(s):  
Jiexiang Hu ◽  
Qi Zhou ◽  
Ping Jiang ◽  
Xinyu Shao ◽  
Tingli Xie
Keyword(s):  
Adaptive Sampling ◽  
Sampling Method ◽  
Surrogate Models ◽  
Variable Fidelity

Dual optical comb spectroscopy using modified adaptive sampling method

2015 ◽  
Author(s):  
Shuji Miyamoto ◽  
Yi-Da Hsieh ◽  
Kohei Kotani ◽  
Sho Okubo ◽  
Hajime Inaba ◽  
...  
Keyword(s):  
Adaptive Sampling ◽  
Sampling Method
Sign in / Sign up

Export Citation Format

Share Document