They tried something like this back in the day, but per par Boeing fucked it up and they shit canned it.Seems like it would be cheaper to line the border with LRAD's Long Range Acoustic Devices. Have a central control room to watch cameras along the border and rotate the sound antenna towards people trying to cross the border. These are mobile so they can be moved around to further interfere with people/drugs/weapons crossings.
The End of SBInet?
Then in 2009 they tried to revive it because there was some good tech that came out of the initial EMD contract.
https://www.dhs.gov/xlibrary/assets/recovery/CBP_SBInet_Program_Final_2009-05-15.pdf
But it ultimately was shitcanned again in 2011.
The “mobile” aspect of the surveillance towers was the non-feasible KPP, but the fixed tower concept lived on…
The bottom line is the technology hasn’t been useful in increasing apprehensions. It’s a quintessential scenario where the concept sounds great on paper, but the utility of it isn’t realized. It’s a constant shit show and seemingly never-ending.
Your idea isn’t dismissed, it’s just been tried a gazillion times to no avail.
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U.S. Border Surveillance Towers Have Always Been Broken
A new bombshell scoop from NBC News revealed an internal U.S. Border Patrol memo claiming that 30 percent of camera towers that compose the agency's "Remote Video Surveillance System" (RVSS) program are broken. Except, this isn't a bombshell. What should actually be shocking is that...
Don’t ask me how I know so much about this shit.
Hope this helps.