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Early Radar Development Video Videos for Engineers
read a lot about the early radar system that was in operation at Pearl Harbor in December 1941 when the surprise
attack by Japanese naval airplanes decimated the fleet with a 3-hour-long raid beginning at around 8:00 on that
sleepy Sunday morning. According to "The
Untold Pearl Harbor Radar Story," by C.P. West, the SCR-270B (Signal Corps radio #270, rev B) radar system had
a range of 250 miles at an altitude of 50,000 feet. Westinghouse built the system in 1940 following a development
contract issued by the Army Signal Corps in 1936.
Historical documents report of the three systems on the
island, two had been shut down and that with the remaining system, operators Joseph Lockard and
George Elliot detected a
formation of aircraft about 137 miles out to sea. They were told it was a squadron of B-17s and to not worry about
it. The rest, as they say, is history.
roots go back to the late 19th century when Heinrich Hertz conducted experiments of radio signals being reflected
off metal surfaces. In 1904, German scientist
Christian Hülsmeyer gave a demonstration of his "telemobiloskop."
By the early 1930s, the U.S., Great Britain, Germany, the USSR, Japan, the Netherlands, France, and Italy, were
all working on radar development programs.
In 1935, the British government commissioned Sir Robert Watson
Watt to develop a "death ray" of microwaves to shoot down enemy aircraft. Although no death ray ever materialized,
the work did lead to the world's first practical surveillance radar system. That led to the
Chain Home coastal radar defense
system that alerted Britain to Luftwaffe attacks in WWII.
in the day, the success of radar was dependent entirely upon the ability of the operator to properly adjust the
system parameters and to interpret what was displayed on the scope. Modern radars use incredibly complex software
algorithms to sort through data to determine not merely range and azimuth, but also altitude, velocity (direction
and speed), acceleration, climb/descent rate, radar cross section (RCS), tracking history, type of target, threat
assessment, and much more. Human operators are primarily used to make command decisions based on the computer's
The videos below are but a tiny sample of what is available on the Internet. Do a search on early radar
development, airborne radar, shipboard radar, space radar, over-the-horizon radar, etc., for more information.
Have the search engine in the video result mode to filter out text results.
Early Radar Development
A short interview with Sir Robert Watson Watt, considered to be the Father of Modern
Attack on Pearl Harbor
I had not seen this footage for many years. You might see your father or grandfather there. It makes me think of
September 11, 2001. The main difference is that the Pearl Harbor attack was initiated by one clearly identified
country's military against another. 9/11 was a group of religious zealots, Muslim Extremists, against both
civilian and military targets.
How many ways has your life been complicated by the 9/11 attackers and their ilk? Fondling and long delays at
airports; government surveillance everywhere - cameras, FBI files for everyone and everything, GPS location
reporting in your car and phone; taxation to pay for fighting the Muslim Extremists; being told by the Government
that you must understand those who attacked you and tolerate hate-filled religious people and institutions
right in your own back yard?
...and yet you keep voting for the same politicians who perpetuate this crap (both Ds and Rs)!