National Forensic Doctor

"Looking at the plants from the excavation site, the luggage containing antiques was buried between one and two years ago. If we preliminarily set the time around last October, we just need to confirm the prior rough location, and the case could make significant progress."

Jiang Yuan stood out and started integrating the case details with technology.

Suddenly, the direction of everyone’s conversation shifted.

Pang Jidong asked, "Can your road surveillance data be kept for so long?"

"No," Cui Qishan replied and added, "Some main road facial recognition checkpoints might work, but we have to determine which road section first and then see whether the suspect drove, biked, or walked."

"What about trying satellites?" The botanist who had just pulled up satellite images immediately opened his computer, browsed several websites, and pondered, "We could try our luck with some satellite data, like WorldView-3, Worldview-4, Beijing-3, which all have a resolution of 0.3 meters; it should be able to recognize people."

"Just so happens the satellite passed by when the suspect did? That’s too coincidental."

"The frequency of some satellites is very high, many passes a day, especially here in Beijing. Also, there are a lot of satellites. Besides those mentioned, there are at least a dozen commercial optical satellites like GeoEye, KOMPSAT-3A with 0.4 meters, and even more with 0.5 meters like Pleiades, Gaofen-1..." the botanist listed with expertise.

Cui Qishan’s interest was piqued, "Can it really be done like that? This is much clearer than Baidu’s satellite maps."

The botanists all laughed.