logging in or signing up RSGCell GPS Venere Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 171 Category: Education License: All Rights Reserved Like it (0) Dislike it (0) Added: February 04, 2008 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... By: jigsdud24 (22 month(s) ago) hey... plz.... allow to download this document plz....... Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript GPS-Cell Phones For Trip Data Collection: GPS-Cell Phones For Trip Data Collection A test of out-of-the-box technology Results and limitations A test of enhancements made to improve quality of data Additional suggested enhancements Is this technology ready for current use?Accutrack & Enhanced Technology Test: Accutrack & Enhanced Technology Test Use of Accutrack All tests with small (and friendly) sample New York, Boston, Rural Vermont & New Hampshire Tests of Drive, Walk, Bike, Rail Enhancements Tested Phone-Side Software Server-Side SoftwareOut-Of-Box Technology - Accutrack: Out-Of-Box Technology - Accutrack General Requirement Motorola i730 iDEN handset Nextel unlimited data access plan Accutrack software installed on iDEN phone Link to Accutrack server View on website for “realtime” Download data for further analysis Bike Trip Results: Bike Trip Results Commonwealth Avenue in South End of Boston One minute drop correctly represented captured bike trip route Walk Trip Results: Walk Trip Results Boston Back Bay Station to a major downtown office building Some problems with Urban Canyons Locations not accurate to roadway Inferentially accurate Car Trip Results: Car Trip Results Driving from White River Junction, Vermont to Boston, MA Cell coverage is spotty One minute was sufficient for highway trips Require greater precision for non-highway trips RSG Enhancement: Cell Phone Software: RSG Enhancement: Cell Phone Software Data Storage and upload cache data on phone and upload when signal is strong Compress data on phone side to limit upload (same location). Dynamically alter location upload times based on speed & distance Assisted GPS for enhanced location informationNightly Data Validation: Nightly Data Validation Recall using web-based tool Correction of routes Identification of stops Addition of meta-data Trip type Auto occupancy Other recall features Update respondent regarding phone battery Show history and support association to previous tripsMeta-Data Enhancements: Meta-Data Enhancements Collection methods Voice activated trip purpose information Voice prompting “is this a stop” Algorithmic post-processing Heuristics for linking O-D where either urban canyons or transit trips cause loss of data Probabilistic (Bayesian) models of activity and location based on web information of surrounding options You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
RSGCell GPS Venere Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 171 Category: Education License: All Rights Reserved Like it (0) Dislike it (0) Added: February 04, 2008 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... By: jigsdud24 (22 month(s) ago) hey... plz.... allow to download this document plz....... Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript GPS-Cell Phones For Trip Data Collection: GPS-Cell Phones For Trip Data Collection A test of out-of-the-box technology Results and limitations A test of enhancements made to improve quality of data Additional suggested enhancements Is this technology ready for current use?Accutrack & Enhanced Technology Test: Accutrack & Enhanced Technology Test Use of Accutrack All tests with small (and friendly) sample New York, Boston, Rural Vermont & New Hampshire Tests of Drive, Walk, Bike, Rail Enhancements Tested Phone-Side Software Server-Side SoftwareOut-Of-Box Technology - Accutrack: Out-Of-Box Technology - Accutrack General Requirement Motorola i730 iDEN handset Nextel unlimited data access plan Accutrack software installed on iDEN phone Link to Accutrack server View on website for “realtime” Download data for further analysis Bike Trip Results: Bike Trip Results Commonwealth Avenue in South End of Boston One minute drop correctly represented captured bike trip route Walk Trip Results: Walk Trip Results Boston Back Bay Station to a major downtown office building Some problems with Urban Canyons Locations not accurate to roadway Inferentially accurate Car Trip Results: Car Trip Results Driving from White River Junction, Vermont to Boston, MA Cell coverage is spotty One minute was sufficient for highway trips Require greater precision for non-highway trips RSG Enhancement: Cell Phone Software: RSG Enhancement: Cell Phone Software Data Storage and upload cache data on phone and upload when signal is strong Compress data on phone side to limit upload (same location). Dynamically alter location upload times based on speed & distance Assisted GPS for enhanced location informationNightly Data Validation: Nightly Data Validation Recall using web-based tool Correction of routes Identification of stops Addition of meta-data Trip type Auto occupancy Other recall features Update respondent regarding phone battery Show history and support association to previous tripsMeta-Data Enhancements: Meta-Data Enhancements Collection methods Voice activated trip purpose information Voice prompting “is this a stop” Algorithmic post-processing Heuristics for linking O-D where either urban canyons or transit trips cause loss of data Probabilistic (Bayesian) models of activity and location based on web information of surrounding options