Discover the world’s highly cited researchers through the AD Scientific Index 2025 Citation Rankings.
These rankings evaluate scientists based on their total and recent citation counts, capturing the breadth and real-time currency of academic recognition. Citation data reveals how widely a scholar’s work is referenced, applied, and extended across diverse disciplines. The rankings are routinely updated to reflect ongoing citation growth, while eliminating distortions from excessive co-authorship and institutional inflation. Premium tools provide access to detailed citation dynamics, unethical citation behavior detection, and field-normalized benchmarking.
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 1

Astronomy
Signal processin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,331
6,887
0.422
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 2

Astronom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,803
1,393
0.497
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 3

Design of precision digital-receivers for use in radio astronomy
digital signal processing
FPGA
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
743
621
0.836
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 4

Astronomy
Instrumentation
Wireless communication
Brain computer interfac
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
424
89
0.210
Ravi Subrahmanyan
Raman Research Institute
Bangalore, India
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,331
6,887
0.422
Astronomy
Signal processin
Udaya Shankar
Raman Research Institute
Bangalore, India
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,803
1,393
0.497
Bargur Seshagiriyappa Girish
Raman Research Institute
Bangalore, India
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
743
621
0.836
Design of precision digital-receivers for use in radio astronomy
digital signal processing
FPGA
Ramesh Balasubramanyam
Raman Research Institute
Bangalore, India
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
424
89
0.210
Astronomy
Instrumentation
Wireless communication
Brain computer interfac