Acknowledgment to Reviewers of Drones in 2021

Rigorous peer-reviews are the basis of high-quality academic publishing. Thanks to the great efforts of our reviewers, Drones was able to maintain its standards for the high quality of its published papers. Thanks to the contribution of our reviewers, in 2021, the median time to first decision was 16 days and the median time to publication was 40 days. The editors would like to extend their gratitude and recognition to the following reviewers for their precious time and dedication, regardless of whether the papers they reviewed were finally published:

Abdelrahman Elsaid	Konstantinos Topouzelis
Abderrahmane Lakas	Kotaro Hoshiba
Abhijeet Ravankar	Kristoffer Gryte
Achilleas Tripolitsiotis	Krzysztof Sibilski
Adam Kiczko	Krzysztof Skabek
Adão Silva	Kursat Kara
Adi Azriff Basri	Kye Adams
Adiel Ismail	Kyle Dunno
Agoston Resta	László Bertalan
Ahmad Khan	Laura Inzerillo
Ahmad Taher Azar	Laura Prosdocimi
Ahmed Alamouri	Le The Dung
Ahmed El Oualkadi	Leonardo De Mello Honório
Aiguo Patrick Hu	Leonardo Lecce
Akos Kereszturi	Leslie Wong
Alaa A. R. Alsaeedy	Linas Balčiauskas
Alberto Martini	Loïca Avanthey
Alejandro Sanchez-Carmona	Lorenzo Brezzi
Alessandro Conti	Lubos Rejfek
Alessandro Fedele	Luca Fallati
Alessandro Giuseppi	Ludovit Kovanic
Alessandro Vizzarri	Luis F. Gonzalez
Alessio Cardaci	Luis Miguel González De Santos
Alessio Fascista	Luiz Carlos Sandoval Goes
Alexey V. Shvetsov	Lukasz Orman
Alfred Mayalu	Maciej Dobrzański
Ali Nadir Arslan	Magdalena Smigaj
Alisson Brito	Maggi Kelly
Alon Davidy	Mahendra Bhandari
Ana Cláudia Teodoro	Mahshid Javidsharifi
Ana Navarro Ferreira	Majed Alwateer
Anandarup Mukherjee	Manlio Bacco
Anastasios Dimou	Manuel Pulido Fernández
André Duarte	Marcelo Guzman
André Luís Marques Macato	Marco Baldo
Andrea Motorni	Marco Balsi
Andrea Piemonte	Marco Paterni
Andreas Birk	Marcos Arza
Andrej Novák	Margaret Kalacska
Andrew H. Lassiter	Margarita Mulero-Pázmány
Andrew Weinert	Maria Nadia Postorino
Andrey Sirin	Marina Michelena
Andrey V. Savkin	Marius Minea
Andrija Krtalić	Marius Petrila
Andrzej Stateczny	Martin Mokroš
Anestis Koutsoudis	Martin Štroner
Ángel A. Rodríguez-Sevillano	Marx Leandro Naves Silva
Angelo Trotta	Masood Varshosaz
Anita Prapotnik Brdnik	Massimiliano Pepe
Anna Banaszek	Mathew Legg
Anselme Muzirafuti	Matija Krznar
Anton Koval	Mauro Innocente
Antoni Grau	Mauro Sebastián Innocente
Antonia Spano	Mbulisi Sibanda
Antonio Santo	Mehdi Hosseinzadeh
Apostolos Papakonstantinou	Mehran Mehrandezh
Arjasakusuma Sanjiwana	Meiwei Kong
Arnadi Murtiyoso	Michael D. Collins
Artan Hysa	Michael Hodgson
Artur M. Gafurov	Michail-Alexandros Kourtis
Artūras Kilikevičius	Michal Weiszer
Arturo Reyes-González	Michel Kasser
Asiya Khan	Micky B Frisch
Atsuhiro Iio	Miguel Ángel Moreno
Aurelio Bermúdez	Min Xia
B. N. Pavan Kumar	Mingguo Ma
Baoqi Huang	Mingliang Bai
Basaran Bahadir Kocer	Mircea-Bogdan Radac
Basman Elhadidi	Mladen Jurišić
Béla Takarics	Mladen Zrinjski
Bikash Rajan Parida	Mohamad Awad
Bilal H. Alsalam	Mohamed Moussa
Blake M. Allan	Mohammad Meraj Mirza
Bo Yang	Mohammed H. Alsharif
Bogdan Walek	Mohd Anuaruddin Bin Ahmadon
Boris Galkin	Mostafa Hassanalian
Boris Miller	Mostafa Mjahed
Boyang Li	Moustafa Nasralla
Brandon Chasco	Muhammad Asghar Khan
Bruno Gonçalves	Mukhtar Ahmed
Buddhika Madurapperuma	Nansong Wu
Cai Luo	Nasim Chitsaz
Carlos Enríquez	Nguyen Dinh Dung
Carlos Soria	Nguyen Ngoc-Phi
Catherine Torcivia	Nicolo Camarretta
Chandra Pappu	Nikolay Todorov Atanasov
Chang Cao	Nusret Demir
Chang Liu	Omar Sami Oubbati
Chao Huang	Oscar Montoya
Chaofan Wu	Osip Kokin
Chenyu Huang	Ou Ma
Chiara Casarotti	Pablo Rangel
Chiman Kwan	Panagiotis Partsinevelos
Chinthaka Premachandra	Panagiotis Sarigiannidis
Chris Lowe	Paolo Fallavollita
Christoph Steup	Parham Nooralishahi
Christopher Ramezan	Parth S. Thakar
Christyan Cruz Ulloa	Parvathy Rajendran
Clemente Ibarra-Castanedo	Paul Sestras
Costas Armenakis	Paula Redweik
Cristian Pérez-Granados	Paulo E. Cruvinel
Cristina Catita	Paulo Eduardo Teodoro
Cully Hession	Pavel Fiala
Dainius Udris	Pavol Kurdel
Daisuke Watanabe	Paweł Burdziakowski
Daniel H. Stolfi	Pawel Tysiac
Daniele Ventura	Paweł Ziolkowski
Danish Khan	Pay Liam Lin
Daosen Zhai	Pedro Orgeira-Crespo
Dariusz Popielarczyk	Pei Wang
Darrell W. Pepper	Pei-Chi Shao
David L. Kulhavy	Pei-Wei Tsai
David Valiente	Pericles Panagiotou
Davide Antonio Cucci	Peter John Burke
Da-Yu Kao	Peter Stütz
Dehua Mao	Phillip Walker
Denis Butusov	Pier Matteo Barone
Denis Horvath	Pietro Manzoni
Denis V. Makarov	Piotr Cofta
Deshi Li	Pradeep V Malaji
Devrim Akca	Przemysław Mazurek
Di Hu	Radoslava Bekova
Diogo Duarte	Rafael Bailón-Ruiz
Dmitriy Kritskiy	Rafał Kowalik
Donghoon Kim	Raman Singh
Dongwon Jung	Raymond M. Danner
Dorota Zawieska	Renato Filipe Henriques
Duc-Tien Nguyen	Reza Alizadeh Kordabad
Dumitrescu Catalin	Ria Sinha
Ebadat Ghanbari Parmehr	Riaan Stopforth
Edison Pignaton De Freitas	Richard Hann
Edson Takashi Matsubara	Richard Overill
Egidio D'Amato	Richard Souza
Ehsan Khoramshahi	Robert Bialik
Elena Basan	Robert Hewson
Elena V. Efremova	Robert Jackisch
Emanuele Barca	Róbert Szabolcsi
Emmanouel T. Michailidis	Roberto Opromolla
Enie Hensel	Rogério Campos-Rebelo
Enrique Guerrero	Rolf Mueller
Eric A. Ramos	Roman Shults
Erica Isabella Parisi	Roman Skidanov
Esteban Valencia	Roman Yavich
Esther Salamí	Rone Ilídio Da Silva
Eunice Nduati	Rudolf Urban
Evangelos Yfantis	Rui Taborda
Fabrice Saffre	Ryan Wallace
Fei Liu	Sachin Sharma
Feja Lesniewska	Saeed Alsamhi
Felix Orjales	Saeed Hamood Alsamhi
Filip Škultéty	Saeid Pourroostaei Ardakani
Flavia Causa	Sagar Chowdhury
Fran Domazetović	Saifur Rahman Sabuj
Francesco Marinello	Saleh Mobayen
Francisco Javier Mesas Carrascosa	Salvatore Corcione
Francisco Valera	Salvatore Ponte
Fulin Luo	Samah Ben Ayed
Gabriel Marangon	Sangman Moh
Gail Schofield	Sante Francesco Rende
Gang Wang	Santiago Zazo
Gaurav Choudhary	Sara Roos-Hoefgeest Toribio
Gernot Paulus	Satoshi Yamamoto
Gil Gonçalves	Scott Xiang Fang
Giordano Teza	Sebastien Duplaa
Giorgio Anfuso	Sebastien Hengy
Giulia Sammartano	Seon Jin Kim
Giulio Casini	Serafin Lopez-Cuervo Medina
Giuseppe Ciaburro	Sergio Fernandez
Giuseppe Del Core	Seyyed Meghdad Hasheminasab
Giuseppe Di Stefano	Shane Siebenaler
Glen Throneberry	Shanshan Wei
Gordana Kaplan	Sheela Ramanna
Görres Grenzdörffer	Sheng Nie
Greg Gogolin	Sheng Wang
Grzegorz Kopecki	Shikun Zhou
Guillermo Valencia-Palomo	Shirin Malihi
Guoqiang Zheng	Shivakumara Palaiahnakote
Hailong Huang	Shi-Wei Lo
Haim Abramovich	Shlomi Hacohen
Hamish Campbell	Shrit Omar
Hann Woei Ho	Shuting Yang
Hanno Hildmann	Sidney C. De Lucena
Haocai Huang	Sophie F. Armanini
Heikki Hyyti	Stephan Helma
Hezhen Lou	Su Zhang
Higinio Jorge	Subramanian Ramasamy
Hirokazu Madokoro	Sultan Shoaib
Honglei Ji	Sunan Huang
Hongtian Chen	Suraj Pawar
Hriday Bavle	Susan E. Meyer
Huapeng Yu	Sutthiphong Srigrarom
Hugo Costelha	Tadeo Espinoza-Fraire
Hwang-Cheng Wang	Tae-Won Ban
Ievgeniia Kuzminykh	Tagir Z. Muslimov
Ihn-han Bae	Taha Elmokadem
Ikjune Yoon	Tairan Liu
Ilyas Nurmemet	Taner Cokyasar
Ing-Chau Chang	Tarek Elderini
Ionica Oncioiu	Teodor Rusu
Ismael Colomina	Thomas Lagkas
Israel Quintanilla García	Tiago Dias
Ivan Forenbacher	Tien-Yin Chou
Ivan Petrunin	Timothy Amukele
Iván Puente Luna	Timothy Sands
Jacek Smereka	Titilayo Ogunwa
Jack Wang	Todd Buters
James Magidi	Tor Erik Evjemo
Jamie Dyer	Tri Dev Acharya
Ján Bačík	Tuan Anh Nguyen
Jan Klesa	Tzu-Hsien Sang
Jan Komarek	Ulf Mallast
Jan Leuchter	Umberto Andriolo
Jane Jean Kiam	Urszula Marmol
Jarosław Pytka	Valeria-Ersilia Oniga
Javaan Chahl	Van Parunak
Javier Leon	Vasil Yordanov
Jawad Yasin	Vasily Desnitsky
Jeff Delaune	Viacheslav Moskalenko
Jesús Fernández-Hernández	Victor Ramos
Jesús Jiménez López	Victor Sanchez-Aguero
Jiaming Na	Vinko Škrlec
Jianfeng Ren	Vipin Kumar
Jinchao Chen	Vishal Sharma
Jing-Sin Liu	Vladan Papic
Jingzhe Wang	Vladan Papić
Jiri Cecrdle	Vladimir E. Ostashev
Jiyu Li	Volodymyr Polishchuk
Joanna Zietkiewicz	Wai-keung Fung
Joanne Halls	Wang Jia
Joaquín Torres-Sospedra	Wei-Cheng Liu
John Murray	Wei-Chuan Chiang
Jorge Delgado	Wenchao Li
Jorge Martínez Guanter	Wen-Cheng Liu
Jose Ernesto Gomez Balderas	Wenze Yang
José Manoel Balthazar	Wojciech Stecz
José Martinez-Carranza	Woonghee Lee
José Simão Antunes Do Carmo	Xiangxiong Kong
Jose-Luis Sanchez-Lopez	Ximan Wang
Joseph Hupy	Ximeng Xu
Joseph Kreimer	Xinghua Li
Joshua T. Kelly	XinMing Zhang
Joydev Ghosh	Xu-Dong Zhu
Juan A. Besada	Xuejian Wu
Juan José Fuldain González	Yali Zhang
Juan M. Santos	Yeison Alberto Garcés - Gómez
Juan Sandino	Yeongmin Jo
Jung-Min Park	Yi Sun
Jūratė Sužiedelytė-Visockienė	Ying-Yen Chen
Kai Zhou	Yixin He
Kamil Krasuski	Yongkuk Lee
Kanji Watanabe	Yu Wu
Karl-Arne Johannessen	Yuanxun Shao
Katarína Pukanská	Yun-Ping Sun
Kaveh Samimi-Namin	Zdeněk Dvořák
Kefu Yu	Zhenhua Zou
Keiko Ioki	Zhenming Peng
Keisuke Otsuka	Zhenxing Gao
Kenji Uchiyama	Zhexiong Shang
Kenneth Whitehead	Zhiqun Hu
Ki-Baek Lee	Zhonghua Hong
Kirill Krinkin	Zinon Vlahostergios
Klaus Thoeni	Zoltan Koppanyi
Konert Anna	Zoltan Torok
Konstantinos Skiadopoulos