VEHICLE EVENT DATA RECORDING WITH SNAPSHOT OF WIRELESS ENVIRONMENT

Event data recording for a road vehicle to support event reconstruction after a trigger event includes a snapshot of the wireless environment within which the vehicle resides. Radio frequency (RF) signals are received from external sources in a vicinity of the vehicle via a plurality of antennas connected to a plurality of receivers. Wireless metadata is compiled based on the detected RF signals. The compiled metadata is timestamped, and then the timestamped metadata is queued in a buffer memory. A trigger event is detected indicating occurrence of an event for subsequent reconstruction. Respective metadata is transferred from the buffer memory to a non-volatile memory upon occurrence of the trigger event. The wireless metadata may preferably include identifiers or signal strength of WiFi or Bluetooth devices, active cellular telephone channels, detected DSRC messages, and spectrum data of EMI sources.