7 papers
A study of uncompensated latency in ADS-B reports
Michelle George, Saurav Tuladhar, Siva Sivananthan
The total latency (TL) in ADS-B is the difference between the true TOA of the original position measured by the onboard GPS and the TOA in the ADS-B report at the GS. We processed…
Random Matrix Theory Model for Mean Notch Depth of the Diagonally Loaded MVDR Beamformer for a Single Interferer Case
Saurav R Tuladhar, John R Buck, Kathleen E Wage
Adaptive beamformers (ABFs) suppress interferers by placing a notch in the beampattern at the interferer direction. This suppres- sion improves detection of a weaker signals in the…
Estimating Passenger Loading on Train Cars Using Accelerometer
Saurav R Tuladhar, Peter Khomchuk, Siva Sivananthan
Crowding on train cars is a common problem plaguing the major public transit agencies around the world. On one hand a crowded train car presents a negative experience for the passe…
Predicting passenger loading level on a train car: A Bayesian approach
Peter Khomchuk, Saurav R Tuladhar, Siva Sivananthan
Crowding in train cars is increasingly a major concern for transit agencies. From the perspective of the passengers and the transit agencies, overcrowding of the train cars has sev…
Unit circle rectification of the MVDR beamformer
Saurav R Tuladhar, John R Buck
The sample matrix inversion (SMI) beamformer implements Capon's minimum variance distortionless (MVDR) beamforming using the sample covariance matrix (SCM). In a snapshot limited e…
Unit circle MVDR beamformer
Saurav R Tuladhar, John R Buck
The array polynomial is the z-transform of the array weights for a narrowband planewave beamformer using a uniform linear array (ULA). Evaluating the array polynomial on the unit c…