Science Fiction Dictionary
A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z

 

AESA Radars Used As 'Death Ray' Weapons?

According to Aviation Week, the Pentagon is now developing active electronically scanned array (AESA) radars that could be used as weapons. A bizarre historical twist to this story is that in 1934, a rumor was started to the effect that Nazi Germany had developed a death ray based on radar. Physicist Robert Watson-Watt was asked to check on the feasibility of such a weapon. He quickly determined that it was unlikely, but that using radio waves to locate incoming bombers might be a real possibility. By 1937, three stations were ready, with more to come; this was a key element in winning the Battle of Britain during WWII.


(AESA radar)

Now it appears that AESA radars may have a weapons component. AESA radars are comprised of many small transmit/receive modules that each scan a fixed area; the antenna does not need to move to scan an area. They have an extremely fast scanning rate, higher range, multiple target engagement and can act as a jamming device.

Some of the airborne AESA radars... use thousands of small transmitters/receivers, each a couple of inches square, that allow the array to conduct many tasks simultaneously. Those include detection of small, even stealthy targets, tracking and communications... and "jamming"... Possible AESA techniques for attacking another radar could include burning through the target radar's antenna side-lobes, filter side-lobes, or other known features of the target system. Radar specialists suggest it is reasonable to suppose this capability is already available to some fielded systems...

[Airborne radar weapon development] appear[s] to be focused on cruise missiles and self-defense against anti-radiation, home-on-jam and air-to-air missiles. The radars seem particularly effective against the latter categories because energy available to focus on the approaching missile increases as an inverse square as distance decreases.

High Power Microwaves (HPM) are also in the process of development as weapons. HPMs generate very short bursts of energy across a wider range of frequencies, while AESA produces longer, more directed bursts of energy:

While HPM produces higher peak power, AESA often generates greater average power. That produces different operational and targeting strategies. For example, Raytheon's [HPM-based] airport protection system uses infrared sensors to find the target and determine where to focus its beam. It also produces effects at longer range, possibly as much as 100 mi., because it produces powerful pulses of energy. AESA radar has the built-in ability to find and track a target, so it can be held on the target for the necessary additional microseconds needed to create its weapons effect.

It was a British writer, H.G. Wells, who first suggested the general idea of "death rays" - namely, the heat ray in his 1898 novel War of the Worlds. The idea for radar was suggested at a very early date by science fiction writer Hugo Gernsback - he called it an actinoscope in his remarkable 1911 story Ralph 124c 41 +:

A pulsating polarized ether wave, if directed on a metal object can be reflected in the same manner as a light ray is reflected from a bright surface… By manipulating the entire apparatus like a searchlight, waves would be sent over a large area.
(Read more about Hugo Gernsback's actinoscope)

Update 22-Mar-2020: As far as I know, the earliest use of the term "death ray" can be found in the 1903 novel The World Masters by George Griffith; see the entry for death-ray. End update.

If you are interested in energy beam weapons, take a look at the MTHEL - Mobile Tactical High Energy Laser under development by the US Army. Read more about the 'death ray' story at Military.com; thanks to an alert reader for suggesting this story. The original story in Aviation Week requires paid registration, unfortunately.

Scroll down for more stories in the same category. (Story submitted 10/14/2005)

Follow this kind of news @Technovelgy.

| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |

Would you like to contribute a story tip? It's easy:
Get the URL of the story, and the related sf author, and add it here.

Comment/Join discussion ( 2 )

Related News Stories - (" Weapon ")

Has Turkey Been Stealing Rain From Iran?
Can one country take another's rain?

We Need To Build Anti-Drone Systems For Civilian Spaces
'the real border was defended by ...a swarm of quasi-independent aerostats...' - Neal Stephenson, 1995.

Bullet Steers Itself! The Advanced Low-Cost Munitions Ordnance ALaMO
'You've heard of a bullet that has your name on it.' - Michael Crichton, 1985.

Russians Think US Is Weaponizing Asteroids
'BY PUSHING AGAINST THE LITTLE MARTIAN MOON WITH OUR ROCKET SHIP, WE HAD LESSENED THE CENTRIFUGAL SPEED THAT HELD IT BALANCED IN THE SKY.' - Philip Nowlan and D. Calkins, 1930.

 

Google
  Web TechNovelgy.com   

Technovelgy (that's tech-novel-gee!) is devoted to the creative science inventions and ideas of sf authors. Look for the Invention Category that interests you, the Glossary, the Invention Timeline, or see what's New.

 

 

 

 

Science Fiction Timeline
1600-1899
1900-1939
1940's   1950's
1960's   1970's
1980's   1990's
2000's   2010's

Current News

Europa Clipper Plate Carries A Special Message
'...a universal cryptogram — yet it is one which can be interpreted by any intelligent creature on any planet in the Solar System!'

Micro-Robots Are Smallest, Fully Functional
'With a whir, the Scarab shot from the concealing shadows of the corner where it had hidden itself.'

AI Enhances Images Your Brain Sees
'I could have sworn the psychomat showed pictures almost as sharp and detailed as reality itself'

Illustrating Classic Heinlein With AI
'Stasis, cold sleep, hibernation, hypothermia, reduced metabolism, call it what you will - the logistics-medicine research teams had found a way to stack people like cordwood and use them when needed.'

Deflector Plasma Screen For Drones ala Star Wars
'If the enemy persists in attacking or even intensifies their power, the density of the plasma in space will suddenly increase, causing it to reflect most of the incoming energy like a mirror.'

DIY Robotic Hand Made After Loss Of Fingers
'I made them... with the fine work of the watchmaker...'

Cheap Drunk Driver Detection From UofM
"Look, I can drive... Start, darn it!"

Can A Human Land A SpaceX Rocket On Its Tail?
'If she starts to roll sideways — blooey! The underjets only hold you up when they’re pointing down, you know.'

Robot Snakes No Longer Stopped By Stairs
'...she dropped her hands from the wheel, took the robot snake from his box.'

Has Turkey Been Stealing Rain From Iran?
Can one country take another's rain?

We Need To Build Anti-Drone Systems For Civilian Spaces
'the real border was defended by ...a swarm of quasi-independent aerostats...'

SensorWake Scent-Based Alarm Clock
'The odalarm awoke Jorj X. McKie with a whiff of lemon.'

AI Worms That Spread
'...there were so many worms and counterworms loose in the data-net now'

Challenges Of Two-Armed Robots
When the left hand knows what the right hand is doing.

FlexRAM Liquid Metal RAM And One Particular SF Movie Robot
'Its lines wavered, flowed, and then painfully reformed.'

Ulm Sleep Pods For The Homeless
'The lid lifted and she crawled inside...'

More SF in the News Stories

More Beyond Technovelgy science news stories

Home | Glossary | Invention Timeline | Category | New | Contact Us | FAQ | Advertise |
Technovelgy.com - where science meets fiction™

Copyright© Technovelgy LLC; all rights reserved.