When a cell phone "pings" with an antenna, the location of the antenna is known and the location of the cell phone can be estimated. The phone does not need to be near the antenna, but does need to be in the range of the antenna. It would be helpful to know the estimated location of Cecil's cell phone when it pinged with the antenna near Deer Springs Road and Highway 15.
This is an edited repost of an earlier post:
Cell Phone "pings" used as locators
My understanding is that the cell phone is pinging with an antenna that is located on a cell tower or another structure. I remember "antenna radiation" maps being available on the web but I am no longer able to find them. It was a way to check if a location was served by an antenna or was in the "shadow" of a hill or other structure. The range of an antenna is effected by the height of the antenna and the strength of the signal.
Oregon uses "cell phone pings" as locators all the time. I don't know about other areas.
Cell Phone pings used as locators:
2014 Oregon
http://www.foxnews.com/tech/2014/08/02/how-tech-tracks-missing-people/
The woman, Jennifer Huston, mentioned in this article probably turned her phone off after visiting the gas station.
2006 Oregon, two cases
http://www.newson6.com/story/765015...p-in-search-in-oregon-for-2nd-time-in-2-weeks
2013 Oregon
Kennewick Police, Oregon State Patrol, Find Missing 80-Year-Old Man Just in Time for Thanksgiving!
By John McKay November 27, 2013 2:31 PM
Read More: Police locate missing Washington Alzheimers patient using cellphone GPS |
http://newstalk870.am/kennewick-pol...t-in-time-for-thanksgiving/?trackback=tsmclip
2007 Washington
http://blog.seattlepi.com/consumersmarts/2007/09/28/saved-by-a-ping/
http://www.komonews.com/news/local/10247516.html