Everyone wanted to find out where Geng Qiang was hiding from Hao Jie, but they didn't expect that Hao Jie couldn't contact him. This is definitely not good news for the serious crime team. According to Hao Jie's account, the reason why Geng Qiang agreed to help her steal the child was that Hao Jie said she would sell the child later and give the money to Geng Qiang. But unexpectedly, Geng Qiang caused a death. According to common sense, Geng Qiang is likely to sell the child himself and then run away quickly. Therefore, they must catch Geng Qiang before he runs away, otherwise he and the child will be hard to find. It's just that the serious crime team now has limited clues, and how to find them has become the biggest problem. Just when everyone was scratching their heads anxiously, Henry came up with a plan.
"We can use mobile phones for triangulation," Henry explained. "We can measure the distance by using the transmission time required for the mobile phone to receive three signal sources, and then calculate the three-dimensional spatial coordinates of the receiver's location based on these three distances. This is how our mobile phone GPS navigates."
"What if he doesn't turn on the navigation on his phone?"
"As long as he can keep talking," Henry said, "as long as he can keep talking, we can lock him through the relationship between his phone and the signal tower. But there is a problem with this, that is, it takes a certain amount of time to lock the specific location, so he must be on the phone for a certain length of time."
"Xiaohao," Sean looked at his brother and asked, "How accurate can this positioning be?"
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