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Volume 13
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10.3390/agriculture13040892
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Article
Peer-Review Record

Flight Parameter—Wind Vortex Characteristic Control Model of a Four-Multirotor Unmanned Aerial Vehicle Operating in Pesticide Spraying of Rice

Agriculture 2023, 13(4), 892; https://doi.org/10.3390/agriculture13040892
by Zhijie Liu 1, Gangao Fan 1, Siyan Ye 2, Zhixun Zhang 1, Han Wu 1, Bo Long 1, Huifen Li 3, Hui Cheng 4, Longmei Wu 3 and Jiyu Li 1,*
Reviewer 2: Anonymous
Agriculture 2023, 13(4), 892; https://doi.org/10.3390/agriculture13040892
Submission received: 20 March 2023 / Revised: 11 April 2023 / Accepted: 16 April 2023 / Published: 18 April 2023
(This article belongs to the Special Issue Application of UAVs in Precision Agriculture)

Round 1

Reviewer 1 Report

 

1. Introduction: It is unclear how to improve pesticide application efficiency of UAVs with the flight parameter. How bad of the pesticide application efficiency if we are not control the parameter. The authors should improve the introduction.

2. The figure 1, 7, 8, 11, 12 are low resolution.

3. No expression for parameter in line 265, 280, 324, 329. Also what are Ai and how to get Ai?

4. Once, get the model. How to use the model? What the results of using the model?

 

Author Response

Please see the attachment.

Author Response File: Author Response.docx

Reviewer 2 Report

I find the submission interesting and publishable. I just have some questions abt it:

1. Authors actually develop an Identification process of the vortex dynamics via a Gaussian distribution by observation of density/sparsing of key points collected in graphs. I consider this a good idea. However, I'd like to know why not to work out a partial differential equation for that (transport-advectio-PDE, transport-heat-PDE-like, etc). It would be interesting to contrast both ideas. What can you mention about this?

2. Explain where the eqs. (in terms of Ai) come from. How did you obtain those entries?

3. With all the vortex data collected, can you perform a computational simulation of the vortex? How far are simualtions from reality?

4. Please provide more detail about the control system represented by blocks in the corresponding figure. 

5. How restrictive are your considerations? Remember that you kept altitude and velocity parameters constants. 

6. Could you improve measurements and (as a consequence) the model with better devices?

7. How sensitive are your results with respect to varying environment conditions during downwashing?

8. Does measurements and models vary for other crops or types of fields?

9. Similar as before: would you detect variations in your results for different crops altitudes or different orographic issues (mountain, valley)? 

10. Could the height of the plants represent a potential problem?

 

Author Response

Please see the attachment.

Author Response File: Author Response.docx

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