TY - JOUR

T1 - Experimental Moving Target Imaging in a Nonanechoic Environment with Linear Sampling Method

AU - Dogu, Semih

AU - Akinci, Mehmet Nuri

AU - Gose, Ersin

N1 - Publisher Copyright:
© 2004-2012 IEEE.

PY - 2021/3

Y1 - 2021/3

N2 - In this letter, imaging of moving targets with qualitative microwave imaging methods (Q-MWMs) is addressed. The problematic side of Q-MWM is the requirement of background measurement. To eliminate this necessity, the total electric field measured at different time instants (say E{mathrm{ tot}}_{n} and E{mathrm{ tot}}_{l} are the total electric fields measured at the n th and l th time instants, respectively) is applied to Q-MWM. For these input data, the output of Q-MWM can be assumed to be the summation of the indicators at these time instants (i.e., E{mathrm{ tot}}_{n}-E{mathrm{ tot}}_{l} produces the differential indicator I_{nl}=I_{n}+I_{l} , where I_{n} and I_{l} are the indicators at the n th and l th time instants, respectively). Using this information for all possible time pairs, an equation system is set for indicator values at different time instants. Solving this equation system, the indicator of Q-MWM for each measurement time is obtained, without taking any background measurement. The performance of the proposed algorithm is verified for the linear sampling method (LSM), which is an example of Q-MWM, with the 3-D and 2-D [both transverse magnetic (TM) and transverse electric (TE)] experimental measurements performed in a nonanechoic environment.

AB - In this letter, imaging of moving targets with qualitative microwave imaging methods (Q-MWMs) is addressed. The problematic side of Q-MWM is the requirement of background measurement. To eliminate this necessity, the total electric field measured at different time instants (say E{mathrm{ tot}}_{n} and E{mathrm{ tot}}_{l} are the total electric fields measured at the n th and l th time instants, respectively) is applied to Q-MWM. For these input data, the output of Q-MWM can be assumed to be the summation of the indicators at these time instants (i.e., E{mathrm{ tot}}_{n}-E{mathrm{ tot}}_{l} produces the differential indicator I_{nl}=I_{n}+I_{l} , where I_{n} and I_{l} are the indicators at the n th and l th time instants, respectively). Using this information for all possible time pairs, an equation system is set for indicator values at different time instants. Solving this equation system, the indicator of Q-MWM for each measurement time is obtained, without taking any background measurement. The performance of the proposed algorithm is verified for the linear sampling method (LSM), which is an example of Q-MWM, with the 3-D and 2-D [both transverse magnetic (TM) and transverse electric (TE)] experimental measurements performed in a nonanechoic environment.

KW - Linear sampling method (LSM)

KW - moving target imaging

KW - qualitative microwave imaging

UR - http://www.scopus.com/inward/record.url?scp=85101820539&partnerID=8YFLogxK

U2 - 10.1109/LGRS.2020.2976594

DO - 10.1109/LGRS.2020.2976594

M3 - Article

AN - SCOPUS:85101820539

SN - 1545-598X

VL - 18

SP - 441

EP - 445

JO - IEEE Geoscience and Remote Sensing Letters

JF - IEEE Geoscience and Remote Sensing Letters

IS - 3

M1 - 9027945

ER -