1 / 16

Mapping of FM and HD Radio Coverage

Mapping of FM and HD Radio Coverage. Brian Casey, Leandro Franca, and Thomas Shanks. April 22, 2009. Project Summary. Measure radio station coverage through: RF Field Strength (conventional method) Signal-to-Noise Ratio of audio (what listeners actually hear) Provide maps of data

brie
Download Presentation

Mapping of FM and HD Radio Coverage

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Mapping of FM and HD Radio Coverage Brian Casey, Leandro Franca, and Thomas Shanks April 22, 2009

  2. Project Summary • Measure radio station coverage through: • RF Field Strength (conventional method) • Signal-to-Noise Ratio of audio (what listeners actually hear) • Provide maps of data • Determine statistical information of SNR • Compare results with and without HD

  3. Block Diagram of System Magnetic Mount Whip • BLUE75Ω coax w/ F connector • RED50Ω coax w/ UHF connector • GREENData connector • BLACK Audio cable RCA to 1/8”

  4. Car and hardware photos

  5. Software Design

  6. Transmission of Test Tones Silence 250 ms Silence 250 ms 1 kHz 250 ms 1 kHz 250 ms • 100% modulation, stereo on, other sub-carriers and processing off • Enable/Disable HD • Interrupts programming, so time of tests 1:30 - 6:00 am

  7. Cost Analysis

  8. Changes since PDR

  9. RF Power vs. Distance From Transmitter

  10. RF Power Map (dBm)

  11. SNR Map

  12. Driving Path Full path Validation Path

  13. Demonstration • Show working automated system (test drive) • Describe functionality of sub systems • Provide data plots and distribution information

  14. Remaining Work • Post-processing software to create maps • Implementation of NI Sound and Vibration Toolkit for SNR and ITU-468 Filter • Calibrate and Validate SNR • Drive Path • Compare with and without HD • Plot final data • Prepare documentation and post everything on site

  15. Future Work • Full coverage drive • Calibrated antenna to determine field strength from dBm measurements • Use truly representative radios • Analyze time and environmental variances of signal

  16. Questions?

More Related