Qualification: 
Ph.D, M.Tech, BE
j_raghu@blr.amrita.edu
Phone: 
+91 7411574801

Dr. Raghu J. joined as an Assistant Professor (Sr. Gr.) at the Department of Electronics and Communication Engineering, School of Engineering, Amrita Vishwa Vidyapeetham, Bengaluru, on June 25, 2018. He has submitted Ph. D. thesis in Radar Target Tracking at National Institute of Technology Karnataka, Surathkal. His research areas are Radar/Sonar Signal Processing, Target Tracking, Track Segment Association (TSA), Track Un-swapping, Data Fusion, Track-Before-Detect (TBD) and Bearings Only Target (BOT) Tracking.

Education

  • 2018: Ph.D. 
    National Institute of Technology Karnataka, Surathkal
  • 2014: M. Tech. 
    Visveswaraya Technological University (VTU), Karnataka
  • 2012: B. E. 
    VTU Karnataka

Publications

Publication Type: Journal Article

Year of Publication Publication Type Title

2018

Journal Article

J. Raghu, Srihari, P., Tharmarasa, R., and Kirubarajan, T., “Comprehensive Track Segment Association for Improved Track Continuity”, IEEE Transactions on Aerospace and Electronic Systems, pp. 1-1, 2018.[Abstract]


Track breakages are common in target tracking due to highly maneuvering targets, association with false alarms or incorrect target-originated measurements, e ow detection probability, close target formations, large measurement errors, and long sampling intervals, among other causes. Existing track segment association (TSA) algorithms solve this breakage problem by predicting old track segments and retrodicting young track segments to a common time followed by two-dimensional (2-D) assignment. This approach presents two disadvantages. First, these algorithms predict or retrodict from the actual point of termination or beginning of their respective tracks: that is, they do not check if the cause of a track termination was incorrect association nor do they redress such an erroneous association. Second, these algorithms do not utilize the measurement information during the breakage period. Often, track terminations are due to incorrect measurement association. To solve the first problem, this paper proposes a 2-D assignment-based TSA algorithm that releases incorrectly associated measurements by going backward and forward in time along old and young track segments, respectively, and then performing prediction and retrodiction. Further, to address both shortcomings in existing TSA algorithms simultaneously, we propose a novel multi-frame assignment-based TSA algorithm that estimates the track during the breakage period, utilizing both unassociated and released measurements simultaneously. Moreover, the proposed algorithms can handle target maneuvers subject to a single turn during the breakage period. In the proposed solution, model parameters such as starting time of the turn, ending time of the turn, and turn rate are obtained by maximizing the likelihood that a given measurement-tuple originated from the track couple under consideration. Simulation results demonstrate that the proposed TSA algorithm is superior to existing ones in terms of association accuracy and co- putational cost More »»