A. Freeman

6.9k total citations · 1 hit paper
142 papers, 5.0k citations indexed

About

A. Freeman is a scholar working on Aerospace Engineering, Environmental Engineering and Atmospheric Science. According to data from OpenAlex, A. Freeman has authored 142 papers receiving a total of 5.0k indexed citations (citations by other indexed papers that have themselves been cited), including 107 papers in Aerospace Engineering, 49 papers in Environmental Engineering and 33 papers in Atmospheric Science. Recurrent topics in A. Freeman's work include Synthetic Aperture Radar (SAR) Applications and Techniques (96 papers), Advanced SAR Imaging Techniques (51 papers) and Soil Moisture and Remote Sensing (44 papers). A. Freeman is often cited by papers focused on Synthetic Aperture Radar (SAR) Applications and Techniques (96 papers), Advanced SAR Imaging Techniques (51 papers) and Soil Moisture and Remote Sensing (44 papers). A. Freeman collaborates with scholars based in United States, United Kingdom and Germany. A. Freeman's co-authors include Stephen L. Durden, Bruce Chapman, Sassan Saatchi, Yuecheng Shen, R. Jordan, J.D. Klein, John C. Curlander, Charles Werner, Paul Siqueira and Masanobu Shimada and has published in prestigious journals such as Journal of Geophysical Research Atmospheres, Remote Sensing of Environment and Geophysical Research Letters.

In The Last Decade

A. Freeman

124 papers receiving 4.7k citations

Hit Papers

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What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

A three-component scattering model for polarimetric SAR data

1998 1.8k citations A. Freeman, Stephen L. Durden IEEE Transactions on Geoscience and Remote Sensing profile →

Peers

Countries citing papers authored by A. Freeman

Since Specialization

Citations

This map shows the geographic impact of A. Freeman's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by A. Freeman with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites A. Freeman more than expected).

Fields of papers citing papers by A. Freeman

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by A. Freeman. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by A. Freeman. The network helps show where A. Freeman may publish in the future.

Co-authorship network of co-authors of A. Freeman

This figure shows the co-authorship network connecting the top 25 collaborators of A. Freeman. A scholar is included among the top collaborators of A. Freeman based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with A. Freeman. A. Freeman is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	Reducing frequent caller use of ambulance services: a review of effective strategies 2025 ·Journal of Paramedic Practice ·David Jones, (unknown), Christopher Smith, A. Freeman, Emma Jones	2
2	Future surface deformation and change observing scenarios 2018 ·AGU Fall Meeting Abstracts ·M. Simons, A. Freeman, S. Hensley, Stephen Horst, (unknown), (unknown), P. A. Rosen	0
3	Impact of Ionospheric Scintillation on Spaceborne SAR Observations Studied Using GNSS 2012 ·Xiaoqing Pi, Franz J. Meyer, (unknown), A. Freeman, R. G. Caton, (unknown)	3
4	Enhancing crystalline properties of a cardiovascular active pharmaceutical ingredient using a process analytical technology based crystallization feedback control strategy 2012 ·International Journal of Pharmaceutics ·Ali N. Saleemi, Gerry Steele, (unknown), A. Freeman, Zoltán K. Nagy	52
5	Airborne SAR Tomographic Ice Sheet Sounding 2010 ·Xiaoqing Wu, K. Jezek, Ernesto Rodríguez, Prasad Gogineni, A. Freeman	2
6	Two-Frequency Radar Experiments for Sounding Glacier Ice and Mapping the Topography of the Glacier Bed 2010 ·IEEE Transactions on Geoscience and Remote Sensing ·Kenneth C. Jezek, S. Gogineni, Xiaoqing Wu, Ernesto Rodríguez, Fernando Rodríguez‐Morales, (unknown), A. Freeman, J. G. Sonntag	18
7	Compact polarimetry mode at low frequency for vegetation applications 2009 ·(unknown), Pascale Dubois-Fernandez, A. Freeman, Éric Pottier	2
8	Studying the Near-Surface Geology of Mars with Imaging Radar 2009 ·AGU Fall Meeting Abstracts ·B. A. Campbell, J. J. Plaut, J. A. Grant, A. Freeman	1
9	Calibration of longer wavelength polarimetric SARs 2008 ·A. Freeman, Thomas L. Ainsworth	1
10	Global Ice Sheet Mapping Orbiter Concept: Airborne Experiments 2008 ·Kenneth C. Jezek, Prasad Gogineni, Xiaoqing Wu, Ernesto Rodríguez, Fernando Rodríguez, J. G. Sonntag, A. Freeman, (unknown), R. R. Forster	4
11	Imaging the Ionosphere Using Polarimetric SAR and GPS 2008 ·AGU Fall Meeting Abstracts ·(unknown), A. Freeman, Bruce Chapman, Elaine Chapin	2
12	Deformation, Ecosystem Structure, and Dynamics of Ice (DESDynI) 2008 ·A. Freeman, Andrea Donnellan, P. A. Rosen, Diane L. Evans, (unknown), (unknown), R. N. Treuhaft, (unknown), W. L. Johnson, Marc Simard, T. G. Farr, Eric Rignot, R. Kwok, Xiaoqing Pi	16
13	Mars Orbital SAR: Obtaining Geologic Information from Radar Polarimetry 2004 ·AGU Spring Meeting Abstracts ·B. A. Campbell, T. A. Maxwell, A. Freeman	3
14	Ionospheric effects on SAR imaging: a numerical study 2003 ·IEEE Transactions on Geoscience and Remote Sensing ·Jun Liu, Yasuo Kuga, Akira Ishimaru, Xiaoqing Pi, A. Freeman	63
15	Detection, Estimation and Correction of Faraday Rotation in Linearly Polarized SAR Backscatter Signatures 1998 ·Radio Science ·A. Freeman, S. S. Saatchi, Yasuo Kuga, Akira Ishimaru	4
16	SIR-C Calibration Results 1995 ·IEEE Transactions on Geoscience and Remote Sensing ·A. Freeman	3
17	Three-component scattering model to describe polarimetric SAR data 1993 ·Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE ·A. Freeman, Stephen L. Durden	113
18	Polarization effects and multipolarization SAR 1992 ·NASA Technical Reports Server (NASA) ·A. Freeman	3
19	Radiometric correction and calibration of SAR images 1989 ·Photogrammetric Engineering & Remote Sensing ·A. Freeman, John C. Curlander	42
20	Synthetic aperture radar (SAR) images of moving targets 1987 ·A. Freeman, Anthony Currie	51

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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