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GeoNumerics’ researchers Ismael Colomina and Pere Molina’s article “Unmanned aerial systems for photogrammetry and remote sensing: A review” cited by 1000.

Castelldefels, 15 March 2020. GeoNumerics is proud to announce that, today, the journal article “Unmanned aerial systems for photogrammetry and remote sensing: A review” has reached 1000 citations according to the Scopus database. The article, published in the ISPRS Journal of Photogrammetry and Remote Sensing in 2014, was co-authored by GeoNumerics’ Dr. Ismael Colomina and Pere Molina, at the time researchers of the Centre Tecnològic de Telecomunicacions de Catalunya (CTTC).

While reaching more than 1000 citations at Scopus, other databases like Google Scholar offer different metrics. In the Google case, the database yields a total number of 1567 citations. Besides the number of citations, the article has been the most downloaded paper of the journal during a long period, and is currently among the top-3 of most downloaded papers in the past ninety days (among these three articles, it is the oldest with difference).

The article covers the early developments, general unmanned aerial systems, regulations and regulators, drone navigation and orientation, sensing payloads, data processing aspects and applications. In spite of the rapid development pace of the drone mapping technology it is still a comprehensive introduction to drones for photogrammetry and remote sensing.

“I started working with drones for mapping purposes already in year 2004. At that time, the general reaction to the use of drones for photogrammetry and remote sensing was one of scepticism or even arrogant rejection, to say the least and not the worst. Today, we are expecting a global commercial drone revenue for 2020 of about 2 B€ (1B € = 109 €), four times larger than five years ago. Within this market, the aerial photography and remote sensing segment is one of the highest growing rate. We are happy to see the drone applications, the drone business and the citations to our paper grow.” says Dr. Colomina, Chief Executive and Chief Scientist of GeoNumerics. Pere Molina, Advanced Applications Programme Manager of GeoNumerics, states that “I am happy and proud about the good adoption that the paper had by the scientific community. Back at that time, drone technology was knocking at the doors of the mapping and surveying community, yet information about drones was somehow disperse and incoherent. My feeling is that we contributed to harmonizing the available information on that time, and surprisingly, the paper has still served the community for about six years now.”

Scopus is Elsevier’s abstract and citation database launched in 2004. It is a source-neutral abstract and citation database curated by independent subject matter experts. It covers three types of sources: book series, journals, and trade journals and gives four types of quality measure for each title: h-Index, CiteScore, SJR (SCImago Journal Rank) and SNIP (Source Normalized Impact per Paper).

The ISPRS Journal of Photogrammetry and Remote Sensing (IJPRS) is the official journal of the International Society for Photogrammetry and Remote Sensing (ISPRS). The IJPRS, formerly known as Photogrammetria (1938-1989), covers sensors, theory and algorithms, systems, experiments, developments and applications. It is a high-quality, and high-impact journal as witnessed by its metrics (CiteScore 8.64, SNIP 2.862, SJR 2.079, Impact Factor 6.942).

GeoNumerics is a research and development (R&D) intensive small-and-medium-enterprise (SME) company specialised in geomatics and accurate navigation.

The CTTC is a non-profit research centre, based in Castelldefels, devoted to telecommunications and geomatics.


Authors: Ismael Colomina and Pere Molina
Year: 2014
Title: Unmanned aerial systems for photogrammetry and remote sensing: A review
Journal: ISPRS Journal of Photogrammetry and Remote Sensing
Volume: 92
Pages: 79-97


Colomina,I., Molina,P., 2014.  Unmanned aerial systems for photogrammetry and remote sensing: A review. ISPRS Journal of Photogrammetry and Remote Sensing, Vol. 92, pp. 79-97.


The article is an open access one and may be downloaded by clicking here.