Chapter 838 - 779: Smooth
A group of people drove to a commercial district, where the front car slowed down.
The walkie-talkie soon broadcasted the voice of Captain Tang, who had just introduced the technical reconnaissance team, saying, "Next, we’ll use the tech recon vehicle to lock onto the mobile phone’s location. Normally, in old models of tech recon cars, we would turn off the walkie-talkies at this point. However, today we’ll conduct a test and add a bit of difficulty by not turning them off."
"Received." Huang Qiangmin responded with a smile.
In the walkie-talkie, Captain Tang continued, "Usually, to find a phone, we first locate the base station and then triangulate. But this method works best during calls. Another method, using the base station to search, has lower resolution—it works fairly well outdoors, but is less effective in more urban areas. Tech recon lock-on is different... Ah, found it."
The front car kept moving as it spoke, and then stopped in front of a residential building with commercial shops on the ground floor.
This neighborhood wasn’t a closed community but rather a mixed-use apartment model. The ground floor consisted of four levels all occupied by shops, bustling like a small commercial community. The floors above the shops were occupied by residences or apartments, totaling around twenty-some buildings. It was challenging to pinpoint the exact building containing the phone when the person wasn’t making calls.
The tech recon car was different; it smoothly drove straight to Building 6 without any hesitation.
The basic model of a tech recon car, often seen in spy dramas, is a radio direction-finding vehicle that can monitor surrounding radio waves while driving, thereby pinpointing the origin of radio signals as precisely as possible.
In earlier years, when electromagnetic signals weren’t as wildly pervasive, driving a radio direction-finding vehicle near a building would generally determine the location.
However, today’s environment, with more complex electromagnetic conditions and increased building height and density, has made it almost impossible to pinpoint a person in a building like decades ago. The environment added to the complexity.