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originally posted by: Nickn3
..... One of these highly intelligent people said, “Why does he want a wall, only seven people crossed the border illegally last week?”
This is the kind of disinformation that is getting around. Many on both sides are seeking the truth. It’s 2019 and the truth no longer exists, I would like to see facts.
originally posted by: TheRedneck
a reply to: chr0naut
The US Southern border is controlled
No, it is not. The US southern border is controlled at ports of entry. Everywhere else it is uncontrolled (i.e. open for all practical purposes).
TheRedneck
originally posted by: Starhooker
a reply to: Liquesence
what is so bad about border security?
What, there are no border patrols?
originally posted by: TheRedneck
a reply to: chr0naut
What, there are no border patrols?
Not nearly enough to patrol an open border.
It takes maybe 30 seconds to run across unimpeded by any obstacle... and border patrols come by at most every few minutes. It's not hard to time that... we used to do it all the time playing "Frogger."
TheRedneck
Where there is no wall or patrols, is desert. Running across 150 miles of Arizona desert, even at the unsustainable rate of 20km/h, takes seven and a half hours.
Time enough to identify them on radar and send a motorized patrol (unless you are willing to admit that the Aerostat Radar system is useless for ground based intercepts or that the patrolling officers are lazy and don't respond to the radar contacts).
originally posted by: TheRedneck
a reply to: chr0naut
Where there is no wall or patrols, is desert. Running across 150 miles of Arizona desert, even at the unsustainable rate of 20km/h, takes seven and a half hours.
Actually, it is semi-arid. A completely arid desert is around Arizona... I believe New Mexico and Texas are semi-arid.
In any case, we're talking about an appreciable amount of the border remaining uncontrolled.
Time enough to identify them on radar and send a motorized patrol (unless you are willing to admit that the Aerostat Radar system is useless for ground based intercepts or that the patrolling officers are lazy and don't respond to the radar contacts).
Radar uses reflectivity to RF radiation. Humans are not visible on radar. There is also no radar at most of these locations because there is no infrastructure to handle them. The wall can be electrified to provide power to radar units (for light aircraft flying over) and ground sensors to detect tunneling activity.
TheRedneck
originally posted by: soundguy
Nah, it’s just the basket of deplorables demonstrating what mindless robots they are. It’s not like they didn’t have the prior two years or 200 for that matter, to make this stand. Not to worry though, as soon as this dies down trump will lead them by nose to the next “big” thing that they didn’t care about the day before. Predictable as the sunrise.
a reply to: OtherSideOfTheCoin
The cammo dudes (Wackenhut security??) use a microwave personnel "fence" around Groom Lake and I am familiar with a few defense contractor companies that have used similar tech.
Even someone doing an army crawl can't get past undetected and it appears to discriminate between animals and humans.
originally posted by: TheRedneck
a reply to: chr0naut
The cammo dudes (Wackenhut security??) use a microwave personnel "fence" around Groom Lake and I am familiar with a few defense contractor companies that have used similar tech.
Even someone doing an army crawl can't get past undetected and it appears to discriminate between animals and humans.
Radar (RAdio Detection And Ranging) does not locate any organic bodies... it is used to detect metallic objects that reflect EM radiation. Without the reflection, there is no detection, and organic bodies simply do not reflect EM radiation.
Microwave sensors can detect organic bodies via a Doppler shift effect, but they have a few issues. First, they tend to give off false alarms. Second, they use a LOT of continuous power. Now, mounting them along a wall would not be a bad idea, as the wall itself could contain power transmission lines and a solid mounting point for the sensors. Without a wall or some other structure, there is simply no reasonable way to provide continuous power or to mount them.
I have been making a loose reference to similar sensor technology by stating there is no infrastructure along vast areas of the border... infrastructure meaning reliable power and solid mounting points. Ground penetrating radar would also be possible if infrastructure existed, to detect any tunneling attempts. It works by analyzing the speed the EM signals travel to and from slightly reflective surfaces, such as the boundary between earth and air. A low frequency GPR system could detect any tunneling attempts, and a properly-tuned conventional radar system could detect any low-flying aircraft crossing overhead.
And none of it is conceivable without a solid structure like a wall in place. With a wall, all of it becomes not just possible, but practical.
TheRedneck
Here's a microwave one" Senstar. They work best line of sight, without a wall, and can be camouflaged (like they do with cell 'phone towers these days).