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Monday, August 8, 2022
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10:00 AM
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12:00 PM
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CPE Master of Science Thesis Defense by Tasnim Azad Abir
- Location: > See description for location
- Cost: Free
- Contact: ECE: Electrical & Computer Engineering Department
- Description: Topic: Bounds on Bearing Estimation Precision for Binaural Broadband Active Sonar
Location: Science & Engineering Building (SENG), Room 212
Zoom Conference Link: https://umassd.zoom.us/j/96133431491
Meeting ID: 961 3343 1491 Passcode: 165216
Abstract:
A broadband active sonar transmits sound pulses and then listens for the received echoes from these pulses that are being reflected by the target. The detection of an echo signal coming from a possible target is done by using matched filtering the echo with the transmitted signal and once the target is detected, the next phase is target localization. In target localization phase the active sonar estimates the target's location in terms of range and bearing where range is estimated from time delay between transmission of pulse and reception of its echo. This thesis focuses on the bearing estimation part of the broadband active sonar. The conventional way to estimate target bearing is to use a receiver array from the bearing information embedded in the differential time delay of received signal at each sensor. However, several recent works focused on the analysis of received echo where the bearing information is encoded by the angle-dependent beampattern of the transmitter. All the previous related works used mainly monaural receiver system. This thesis focuses on the binaural model for a broadband active sonar which analyzes the bearing Fisher Information (FI) and determines the performance bound of bearing estimation by using Cramer-Rao Lower Bound (CRLB).The CRLB on target bearing has been evaluated as a function of SNR, angle and interaural distance which provides an insight for how FI varies with angle for different interaural distance. Monte Carlo trials were also performed to simulate the Mean Squared Error (MSE) from a Maximum Likelihood Estimator (MLE) to validate the CRLB on target bearing. The CRLB of target bearing is consistently reduced with increasing interaural distance which indicates performance improvement. The monaural active models suggested that there is a sweet spot where the FI is maximized and bearing estimation performance is optimum. However, for increased interaural distance which provides best estimation performance, this binaural model suggests that the FI increases monotonically to its maximum as the target moves towards broadside. In this work by introducing a binaural active sonar model, the bearing information available from both the angle-dependent transmitter beampattern and the relative phase difference between the received signals on the two sensors have been utilized to measure the performance of this model.
Advisor(s): Dr. John R. Buck, Chancellor Professor, Department of Electrical & Computer Engineering, UMASS Dartmouth
Committee Members: Dr. Dayalan Kasilingam, Professor, Department of Electrical & Computer Engineering, UMASS Dartmouth; Dr. Paul J. Gendron, Associate Professor, Department of Electrical & Computer Engineering, UMASS Dartmouth
Note: All ECE Graduate Students are ENCOURAGED to attend.
All interested parties are invited to attend. Open to the public.
*For further information, please contact Dr. John R. Buck via email at jbuck@umassd.edu
- Topical Areas: General Public, University Community, College of Engineering, Electrical and Computer Engineering
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10:00 AM
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1:30 PM
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New Employee Orientation
- Location: > See description for location
- Contact: Human Resources
- Description: New Employee Orientation is held on a biweekly basis throughout the year for new employees of the University. Attendance at an Orientation session is a mandatory component of the onboarding process. This session will cover a wide range of topics to guide new employees in their transition to the University, including, but not limited to: HR policies; procedures; an overview of key departments and their functions, and detailed benefits information.
Location: TBD
- Topical Areas: Faculty, Staff and Administrators
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Wednesday, August 10, 2022
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3:00 PM
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4:00 PM
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Tips for Hosting Zoom Meetings
- Location: Claire T. Carney Library, Room 128
- Cost: Free!
- Contact: CITS Instructional Development
- Description: This workshop is intended for Zoom users who already know the basics and are ready to learn more. Topics covered include adding a profile picture, using virtual backgrounds, enabling recording, downloading recorded meetings, creating a custom personal meeting ID, chat, polling, breakout rooms, and using Zoom's security features.
Be sure to bring any questions you may have about Zoom!
This workshop will take place via Zoom. A meeting link will be sent to registrants via email on the morning of the event.
Contact Rich Legault for more information at 508-999-8799,
or email RLegault@umassd.edu.
Seating is limited, so please register today!
- Topical Areas: Faculty Development, Training, Workshop, audience: Everyone
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10:00 AM
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11:00 AM
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Financial Aid Help Labs: Library 226
- Location: > See description for location
- Contact: > See Description for contact information
- Description: Financial Aid FAFSA Help Labs in Library 226
Financial Aid Services wants to remind all students to file their FAFSA! Join Financial Aid Services for FAFSA Help Labs in Library 226 on Wednesdays from 10am to 11am for help filing your FAFSA and learning more about financial aid.
Contact Mark Yanni
myanni@umassd.edu
- Topical Areas: Students, Students, Graduate, Students, Law, Students, Undergraduate, Financial Aid
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Friday, August 12, 2022
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3:00 PM
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4:00 PM
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Summer Financial Aid FAFSA Help Zoom Labs
- Location: > See description for location
- Contact: > See Description for contact information
- Description: Financial Aid FAFSA Help Zoom Labs
Financial Aid Services wants to remind all students to file their FAFSA! Join Financial Aid Services for FAFSA Help ZOOM Labs on Fridays from 3-4pm for help filing your FAFSA and learning more about financial aid.
Zoom link:
https://umassd.zoom.us/j/91570250746?pwd=d2NyRk9lVVg4V2krdVA2NkRBb1JYQT09
Contact Mark Yanni
myanni@umassd.edu
- Topical Areas: Students, Students, Graduate, Students, Law, Students, Undergraduate, Financial Aid
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Saturday, August 13, 2022
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10:00 AM
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12:00 PM
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Campus Tour
- Location: UMass Dartmouth
, 285 Old Westport Road, Dartmouth, MA
- Contact: Admissions
- Description: Your tour will include:
15 Minute Admissions Welcome presentation.
45 minute walking tour of First year housing, Dining, and academic buildings.
Meeting with an Admissions counselor upon request after the tour.
Please wear comfortable shoes and plan for our various New England weather.
If you have questions please contact Undergraduate Admissions:
508-999-8605
admissions@umassd.edu
- Link: https://apply.umassd.edu/register/?id=942b6ab1-7626-42f8-8149-cbb7458458ec
- Topical Areas: General Public, Students, Undergraduate, University Marketing, Undergraduate Admissions
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