Design and Implementation of K-Band Electromagnetic Wave Rain Gauge System
Round 1
Reviewer 1 Report
Comments and Suggestions for AuthorsThe authors provide an interesting low-power and compact radar rain gauge at K-band. The paper is generally well-written but I would like to see additional references and explanation before it is published. Here is a list of concerns on the paper:
1) there is a commercial FMCW radar rain gauge called Micro Rain Radar (MRR) that is built in Finland that is 24 GHz and should be referenced. The EWRG in this paper is a much better radar than MRR but that work should be referenced.
2) What is the bandwidth of the LFM chirp? Figure 14 shows pulse compression is performed in digital receiver.
3) There is a lack of discussion on calibration and how things like a wet radome losses will be mitigated. It would be nice to know the minimum detectable signal with this radar.
4) What is the bandwidth of the LFM chirp? Figure 14 shows pulse compression is performed in digital receiver.
5) 24.15 GHz is right on the wather absorption line. What is the attenuation from water vapor.
6) A reference is needed on polarimetric measurements near equations 6 in the text such as Doviak and Zrnic book.
7) Near line 229, the authors should define the meteorological quantities such as Z, v, w, ZDR,.. They are currently defined in the Figure 16 caption.
With the above suggestions answered, this will make a nice contribution.
Author Response
Please see the attachment.
Author Response File: 
Author Response.pdf
Reviewer 2 Report
Comments and Suggestions for AuthorsIn this paper, a K-band dual polarization radar is designed as a rain gauge system for overcoming the limitations of conventional cylindrical ground rain gauges, the system design and implementation are quite advanced. However, K-band radar is mainly used for clouds and weak precipitation observation due to its strong attenuation in rainy medias. In segment 3.2, preliminary performance evaluation, only a few observed images of the instrument are provided without mentioning any rainfall detection, and there are a very significant attenuation in the images. Please provide some gauge and weather radar comparison to demonstrate the credibility of this instrument in rainfall measurement.
Author Response
Please see the attachment.
Author Response File: Author Response.pdf
Reviewer 3 Report
Comments and Suggestions for Authors[Title]
Design and Implementation of K-band Electromagnetic Wave Rain Gauge System
[Summary]
The authors describes the components of the EWRG and demonstrated its performance by rain observation.
[General Coment]
The presentation is clear but I have a general comment.
This manuscript describes K-band dual-plarization radar rain gauge, and it can be better to mention the advantage of K-band radar comperaed to typical weather radars (S-, C- and X-bands), explicitly.
I think the manuscript should be accepted to publish after modifying some minor English errors.
Comments on the Quality of English LanguageLine 104: Linear Frequency Modulation (LFM)
The words already appeared above (Line 89) so you can write simply "LFM" here.
Line 143
Write aso the full name of "PCB".
Line 175
Write alo the full name of "OMT".
Line 186
Write alo the full name of "FRP".
Author Response
Please see the attachment.
Author Response File: Author Response.pdf
Round 2
Reviewer 2 Report
Comments and Suggestions for AuthorsThe authors have added some content to support the research results of the paper, and there are no further additional comments.
