Dr. Michael C. Fowler Profile

Dr. Michael C. Fowler

at Virginia Tech

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 6 May 2021 Paper

Weighted certainty grids for dynamic search

J. Persons, Daniel Doyle, Michael Fowler

Proceedings Volume 11756, 117560P (2021) https://doi.org/10.1117/12.2586175

KEYWORDS: Situational awareness sensors, Probability theory, Motion measurement, Active sensors

Read Abstract +

Teams of manned and unmanned active sensors can provide tactical military units, search and rescue teams, and emergency response units with timely information; however, limited numbers of these systems mean their tasking must be prioritized, and the information they provide needs to be synthesized to avoid overwhelming users. Automated methods can fuse a priori and real-time information to provide decision-makers with time- critical situational awareness and a basis for search prioritization and route planning. Previous work has shown how expected entropic information gain can be used as a measure of utility in motion planning, though in multi- target search scenarios not all information is equally valuable. This research investigates generating certainty grids for dynamic search prioritization using a time-dependent cell valuation that incorporates entropy as well as threat- and geography-specific importance of information relative to the mission. We compare two different approaches to calculating posterior probability and entropy: a Bayesian log odds method based on prior works on obstacle avoidance; and a Dempster-Shafer Theory approach using a plausibility measure. The resulting weighted certainty grid map is provided for dynamic search. We then demonstrate how this adaptive, integrated situational awareness approach performs in different simulated, small unit tactical scenarios.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years