This map shows the geographic impact of Sam Pullen'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 Sam Pullen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Sam Pullen more than expected).
This network shows the impact of papers produced by Sam Pullen. 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 Sam Pullen. The network helps show where Sam Pullen may publish in the future.
Co-authorship network of co-authors of Sam Pullen
This figure shows the co-authorship network connecting the top 25 collaborators of Sam Pullen.
A scholar is included among the top collaborators of Sam Pullen 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 Sam Pullen. Sam Pullen is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Lee, Jiyun, et al.. (2015). Multi-dimensional Verification Methodology of Ionospheric Gradient Observation during Plasma Bubble Events in the Brazilian Region. 748–762.3 indexed citations
5.
Pullen, Sam, et al.. (2013). Guidance, Navigation, and Separation Assurance for Local-Area UAV Networks: Putting the Pieces Together. 902–914.3 indexed citations
6.
Pullen, Sam, et al.. (2013). The Impact of GPS Modernization on Standalone User Performance and Integrity with ARAIM. 2637–2653.3 indexed citations
7.
Datta‐Barua, Seebany, Jiyun Lee, Sam Pullen, et al.. (2010). Ionospheric Threat Parameterization for Local Area GPS-Based Aircraft Landing Systems. Mikrobiolohichnyi Zhurnal. 37(3). 320–4.10 indexed citations
8.
Jung, Sungwook, et al.. (2010). Long Term Monitoring of Ionospheric Anomalies to Support the Local Area Augmentation System. 2651–2660.10 indexed citations
9.
Kubo, Nobuaki & Sam Pullen. (2008). Instantaneous RTK positioning based on user velocity measurements. 4. 1406–1417.4 indexed citations
10.
Pullen, Sam, et al.. (2007). Data-Replay Analysis of LAAS Safety during Ionosphere Storms. Proceedings of the 20th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2007). 404–414.5 indexed citations
11.
Konno, Hiroyuki, Sam Pullen, Jason Rife, & Per Enge. (2006). Ionosphere Monitoring Methodology for Hybrid Dual-Frequency LAAS. Proceedings of the 19th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2006). 409–424.7 indexed citations
Luo, Ming, Sam Pullen, Todd Walter, & Per Enge. (2004). Ionosphere Spatial Gradient Threat for LAAS: Mitigation and Tolerable Threat Space. 490–501.30 indexed citations
14.
Akos, Dennis, et al.. (2002). The Integrity Monitor Testbed and Multipath Limiting Antenna Test Results. Proceedings of the 15th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2002). 2596–2601.2 indexed citations
15.
Luo, Ming, et al.. (2001). Testing and Research on Interference to GPS from UWB Transmitters. Proceedings of the 14th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2001). 1–13.8 indexed citations
16.
Pullen, Sam, et al.. (2001). Satellite Autonomous Integrity Monitoring and its Role in Enhancing GPS User Performance. Proceedings of the 14th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2001). 690–702.13 indexed citations
17.
Akos, Dennis, Ming Luo, Sam Pullen, & Per Enge. (2001). ULTRA-WIDEBAND AND GPS : CAN THEY CO-EXIST?. 12(9).1 indexed citations
18.
Pullen, Sam, Ming Luo, Scott Gleason, et al.. (2000). GBAS Validation Methodology and Test Results from the Stanford LAAS Integrity Monitor Testbed. 1191–1201.13 indexed citations
19.
Pervan, Boris, et al.. (2000). Sigma Estimation, Inflation, and Monitoring In the LAAS Ground System. 1234–1244.20 indexed citations
20.
Luo, Ming, Sam Pullen, Junlin Zhang, et al.. (2000). Development and Testing of the Stanford LAAS Ground Facility Prototype. 210–219.12 indexed citations
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.