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Researcher · Indian Space Research Organisation · India

O. P. N. Calla

O. P. N. Calla publishes mostly in Aerospace Engineering, Electrical and Electronic Engineering and Environmental Engineering, on topics such as Precipitation Measurement and Analysis, Synthetic Aperture Radar (SAR) Applications and Techniques and Soil Moisture and Remote Sensing.

OpenAlex
World rank
#1,367,515
of 1,633,909 ranked researchers
Rank in India
#30,968
of 44,512
Works
20
Citations
8
Citations per work
0.4

What does O. P. N. Calla research?

Aerospace Engineering: 22.2%Electrical and Electronic Engineering: 16.7%Environmental Engineering: 16.7%Biomedical Engineering: 11.1%other fields: 33.3%22%top field
Aerospace Engineering22.2%Electrical and Electronic Engineering16.7%Environmental Engineering16.7%Biomedical Engineering11.1%other fields33.3%

Shares of their own output, by the field each of their topics belongs to. The grey slice is everything not listed.

  1. 1Aerospace Engineering22% of their works
  2. 2Electrical and Electronic Engineering17% of their works
  3. 3Environmental Engineering17% of their works
  4. 4Biomedical Engineering11% of their works
  5. 5Atmospheric Science11% of their works
  6. 6Ocean Engineering6% of their works

Research topics

Which keywords describe O. P. N. Calla's research?

The keywords of their largest research topics: Hydrological Modeling, Validation, Precipitation, Remote Sensing, SAR Interferometry, Satellite, Soil Moisture and Surface Deformation Monitoring.

Size is their works in the topics tagged with each word, from their 8 largest topics. Each links to the topic it comes from most.

All 18 words, with their numbers
  1. Hydrological Modeling42 topics
  2. Validation42 topics
  3. Precipitation21 topic
  4. Remote Sensing21 topic
  5. SAR Interferometry21 topic
  6. Satellite21 topic
  7. Soil Moisture21 topic
  8. Surface Deformation Monitoring21 topic
  9. Clock Synchronization11 topic
  10. Compound Eyes11 topic
  11. Freeform Optics11 topic
  12. Implantable Antennas11 topic
  13. LEO Satellite Constellation11 topic
  14. Radar Propagation11 topic
  15. Refractivity Estimation11 topic
  16. Satellite Communications11 topic
  17. Wireless Body Area Networks11 topic
  18. Wireless Sensor Networks11 topic

Where does O. P. N. Calla work?

O. P. N. Calla's main affiliation in the publication record is Indian Space Research Organisation, India.

How many publications and citations does O. P. N. Calla have?

Science Explorer counts 20 works and 8 citations for O. P. N. Calla, ranking #1,367,515 of 1,633,909 researchers worldwide on the composite score.

Ranked on field-normalised excellence (50%), output (30%) and citations (20%). Counts come from OpenAlex author records, which occasionally merge different people who share a name or split one person into several.

Other researchers named O. P. N. Calla

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