Human Radar

[sebastianbach]

Hello,

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I was taking a glance at that movie: Cage Dive. Briefly, the subject of the movie was 3 persons got lost in the sea and they couldn' t be found by coast guards for a while.

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In the year 2018, that movie seemed primitive practice to me, since the sharks were more capable of finding people than coast guards.

I would like to know if it would be possible to make a radar that can find the people in the sea when they lost. What do you think about the toppic?

If any engineer would like to make this thing work, i would be happy if he would give my name on the device. Thank you for your interest.

 

[bombastinator]

I believe you are referring to “sonar”

 

[Anise]

Hello,

--------------------MOVİE SPOİLER----------------
I was taking a glance at that movie: Cage Dive. Briefly, the subject of the movie was 3 persons got lost in the sea and they couldn' t be found by coast guards for a while.

--------------------MOVİE SPOİLER----------------

In the year 2018, that movie seemed primitive practice to me, since the sharks were more capable of finding people than coast guards.

I would like to know if it would be possible to make a radar that can find the people in the sea when they lost. What do you think about the toppic?

If any engineer would like to make this thing work, i would be happy if he would give my name on the device. Thank you for your interest.

Aren't we in the year 2018 right now? Doesn't seem all that primitive to me Guess it depends where you live.
Are you talking about microchipping people like we do animals? Nope, ain't going there.

 

[bombastinator]

After thinking about this for a bit, it is questionable if even sonar would be effective without massive upgrades in sensitivity. A better suggestion then might be trained orcas. Their sonar is far far better than any mechanical system plus they could carry the seamen back in their mouths

 

[Irked Particle]

I feel like radar wouldn't work because waves would interfere too much. I'm thinking also because you always had about planes flying close to the ground to avoid radar, maybe it wouldn't work at ground level. But that could be an outdated maneuver with more advanced radarthese days, I'm not sure.

Trained orcas is an interesting idea, though!

 

[bombastinator]

I feel like radar wouldn't work because waves would interfere too much. I'm thinking also because you always had about planes flying close to the ground to avoid radar, maybe it wouldn't work at ground level. But that could be an outdated maneuver with more advanced radarthese days, I'm not sure.

Trained orcas is an interesting idea, though!

“Interesting” is a good word

 

[Anise]

I feel like radar wouldn't work because waves would interfere too much. I'm thinking also because you always had about planes flying close to the ground to avoid radar, maybe it wouldn't work at ground level. But that could be an outdated maneuver with more advanced radarthese days, I'm not sure.

Trained orcas is an interesting idea, though!

As long as they don't eat the people they're saving.

 

[bombastinator]

As long as they don't eat the people they're saving.

But... they get hungry too... this seems like an unreasonable requirement. You wouldn’t be able to use killer whales at all then. You’d have to go and use dolphins like the navy does.

 

[denali_41]

radar is useless if they are in the water,sonar is not practical since the sensitivity of it ,couldn't cipher between humans,sharks or large seaweed drifts

 

[bombastinator]

radar is useless if they are in the water,sonar is not practical since the sensitivity of it ,couldn't cipher between humans,sharks or large seaweed drifts

Which is why I say orcas. The bulls are all about seamen

 

[Nermal]

. . .If any engineer would like to make this thing work, i would be happy if he would give my name on the device. . . .

I'm sure nothing would make the lucky engineer happier.

 

[sonicbomb]

a radar that can find the people in the sea when they lost

sharks

 

[sebastianbach]

What i know about this concept is that there are 2 subjects that can be affiliated with the radar as: laser and radar altimeters.

I know this thing is being used on air but maybe this can be applied to the water somehow?

 

[bombastinator]

sharks

...with fricken radar

 

[CMD-Ky]

Calling @Bunnykiller

 

[bombastinator]

Calling @Bunnykiller

You can’t kill bunnies with sharks silly. Bunnies are way too good at jumping

 

[bombastinator]

What i know about this concept is that there are 2 subjects that can be affiliated with the radar as: laser and radar altimeters.

I know this thing is being used on air but maybe this can be applied to the water somehow?

Hmm.. radar is radio waves bounced off objects. Radio is terrible at moving through water though. Sound waves move through water even better than they do through air though. So maybe what you need is a version of radar that uses sound.... some sort of ”soundar “ if you will...

 

[Bunnykiller]

Calling @Bunnykiller

you called???

 

[Bunnykiller]

hmmmm and how are we looking for the people?? air recon or by boat? visual by air is the best method so far... using sonar is sketchy since the human body is like 60+% water ( not really dense enuf to reflect the sound wave... if sonar was a non linear pulse ( frequency modulated like whales and dolphins use) there would be a better chance for success ... but the real issue is the interpetation of the reflected sound waves... we just dont have the ability to reproduce that accuracy as our aquatic mammals do... millions of years of evolution will always beat 50 yrs of engineering... until we can figure out to what "we are listening to" its just noise...

 

[Bunnykiller]

Hmm.. radar is radio waves bounced off objects. Radio is terrible at moving through water though. Sound waves move through water even better than they do through air though. So maybe what you need is a version of radar that uses sound.... some sort of ”soundar “ if you will...

since radar is an EMF type of energy, it has a hard time traveling long distances thru water... sound on the otherhand can travel hundreds of miles ( until it hits thermoclines) and about 4 times faster than in air...
the higher the frequency of the energy source, the quicker it dies out in water... light for example... at about 60'-120' most of the visible spectrum is lost depending on how murky the water is...

my best thought would be to use some type of "side view" fish finder but by the time you get close enuf one would be within visual range anyway....

heres an idea... package up some kind of highly reflective ( radar wise) balloon ( ehhh 4-6' dia) that has a 100' cord and it is filled with helium via a small canister when the moment requires... wala a radar passive low cost beacon...