2D-DOA Estimation in Multipath Using EMVS Rectangle Array
Round 1
Reviewer 1 Report (Previous Reviewer 1)
I don't think this paper is enough to be published. The theoretical analysis has long been done in various studies. There is nothing new on the analysis.
Experimental verification is strongly required for publication.
Author Response
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Author Response File: 
Author Response.docx
Reviewer 2 Report (Previous Reviewer 2)
The sentence structure on page 2, lines 69-70 needs to be improved.
The legends in Figures 3, 4, 5, 6. and 7 are too large and need to be decreased in size and repositioned.
The legends obscure important portions of the plotted curves.
Some additional detail on the nature of EMVS sensors, including their performance capabilities in relation to polarization estimation, would be helpful.
Some comments on the performance of the algorithm in a multipath channel environment would be valuable.
The English language is high quality.
Author Response
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Author Response File: Author Response.docx
Reviewer 3 Report (Previous Reviewer 3)
Please see the PDF file.
Comments for author File: 
Comments.pdf
Author Response
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Author Response File: Author Response.docx
This manuscript is a resubmission of an earlier submission. The following is a list of the peer review reports and author responses from that submission.
Round 1
Reviewer 1 Report
This paper proposes a method to estimate a 2-D DOA using electromagnetic vector sensor array. The authors make use of formulations derived earlier in the Ref. 24, and give some interpretation on it. With some assumptions, the authors showed some simulations results. They give some interesting analysis the behaviour of the polarized EMVS array, but they do not give any real results. Therefore, it is not enought to be published.
Author Response
Please see the attachment.
Author Response File: Author Response.docx
Reviewer 2 Report
Some additional detail on the output of an antenna array Y in equation (1) would be helpful to the reader. Some more detail of the physical significance of the polarization response vector shown in equation (2) would also be helpful. In the conclusion, there should be some discussion of the amount of performance advantage that is theoretically possible by algorithms which utilize polarization information in the 2D-DOA estimation.
Author Response
Please see the attachment.
Reviewer 3 Report
1. on page 2, line 68-69 line : ~ represent transpose, conjugate and inverse -> ~ represent transpose, inverse and conjugate. (error in order ?)
2. on page 3, line 79 : k-th source single is ~ -> k-th source signal is ~ (typo ?)
3. There was a comment of multipath signal in abstract, but the analysis of multipath effect cannot be found in simulation results.
4. Please add the results of MUSIC algorithm.
5. on page 3, line 94-95 (A2) : The author said that the a_x,k1^T * a_x,k2 = d(k1-k2) (A2). Is it exact ? I think it is approximate not exact.
6. In the proof process of Lemma 1, the validity of A2 is required, but this assumption is approximate and does not suit mathematical proof.
Author Response
Thank you for pointing out the errors in the manuscript and providing suggestions for improvement. I will make the necessary corrections according to your requirements. Thank you again for your valuable feedback.
