timeline: the radar

made by Megan, eneko, camila and cheska

EVOLUTION OF THE

RADAR

WHat is the radar?

The development of the system to measure the speed of radio waves.

1887

The invention of the ''Telemobiloskop''

1904

The creation of the radio altimeter and demonstration of being able to detect distant objects through waves.

1920 - 1922

TIMELINE: THE RADAR

They managed to measure the ionosphere with pulsed radio waves and the first radiolocation was created.

1925 - 1928

It began researching remote measurement and achieving the creation of and aircraft detection before the radar.

1933 - 1934

The creation of the radar.

1935

The first airborne radar for ship detection flew and the creation of the ''chain home''

1937

During these years, they invented this to help us know if we have had any risky contact with covid

2019 - 2020

The radar nowadays

HOW DOES IT WORK?

Different applications and uses where this type of technology is used:

WHAT HAPPEND IN 1937?

In 1937, the first airborne radar for ship detection flew. A version for nighttime aircraft interception was also being developed.

This same year, the “Chain home” was operational, long before the war ended. It was a group of entenas that made it easier to detect enemy planes. No one is credited with the invention of RADAR. Many give this credit to the English for being the pioneers in this field. They were the ones who created the “Chain Home” to prevent a German air attack in World War II.

Chain home

WHAT HAPPEND DURING 1925 - 1928?

Between 1925 and 1926, American physicists Breit and Tuye and British researchers Appleton and Barnett were able to measure the Earth's ionosphere using a pulsed radio wave transmitter.

Years later, in 1928, HM Signal School in the United Kingdom received the first radiolocation patent.

WHAT IS IT?

Radar is the method of detecting distant objects and knowing their positions, velocity and other characteristics through the reflection property of radio waves. The word Radar comes from the English words “Radio Detection and Ranging”.

Radar is a sensing device in that it has its own source of illumination (a transmitter) for locating targets. It typically operates with electromagnetic spectrum (the entire distribution of electromagnetic radiation according to frequency or wavelength).

HOW IS THE RADAR HOWADAYS

Nowadays, we use radar in our daily lives for anything, such as in aircraft, ships or even the terrain itself. But the most common is to calculate the speed of a transport.

How does it work? The radar sends the electromagnetic signal to the vehicle and receives the rebound signal, this difference caused allows the speed to be calculated.

Every day there are more radars on the roads to try to prevent traffic accidents and deaths due to the speed.

WHAT HAPPEND IN 1887?

In 1887, a physicist named Heinrich Hertz began experimenting with radio waves in his laboratory in Germany and discovered that radio waves could be transmitted by different materials and reflected by others. He developed a system to measure the speed of radio waves.

WHAT HAPPEND IN 1904?

In 1904, Christian Hulsmeyer created a device called ''Telemobiloskop'' or remote object viewing device in Germany, the United Kingdom, the United States, etc.

This device could detect ships at a range of 3000 meters. Without any type of amplification because the tubes weren't invented yet.

WHAT HAPPEND IN 2019 - 2020?

The radar was also used to find out if you have been in contact in recent days with someone who has been diagnosed with COVID-19. This is what is known as 'automatic tracing', essential for stopping chains of contagion. in 2019.

How does it work?

You must keep your cell phone on and always carry it with you when leaving the house. As it is an app, we should always have the ''COVID radar'' option and Bluetooth and check the notifications to observe the risk of exposure.

But on October 9, 2022, the app was no longer active.

WHAT HAPPEND DURING 1920-1922?

In the 1920s, the decade-long experiments from RC Newhouse of Bell Laboratories resulted the radio altimeter, which became operational in 1937.

Later, in 1922, Guglielmo Marconi wanted to demonstrate that it was possible to detect distant objects with the help of radio waves, but it was not until 1933 that he was able to show it.

- Different applications and uses where this type of technology is used

The radar is mainly used in:

meteorology

wide variety of military uses.

air traffic control systems

It consists of a rotating plate protected by a large white dome; This dish sends pulses of energy (the radar beam) into the atmosphere to detect objects, such as rain or hail

In general, their function, is that they are always among the priority objectives for defense, they have the latest countermeasures or protection against electronic attacks

Is the generic term for all radar devices used to protect and monitor civil and military air traffic in air traffic management

WHAT HAPPEND IN 1935?

The current radar model was created in 1935 and developed mainly in England during World War II. It was created by Robert Watson Watt who developed the equipment to detect the echo of radio waves that led to the invention of radar.

He was a Scottish engineer and physicist. His patent on this subject led the United Kingdom to install the first defense radar network.

HOW DOES THE RADAR WORK?

As the name implies, radars use radio waves to determine the distance and velocity of the targets they hit. A radar system usually consists of a transmitter to send out radio signals and a receiver to catch any reflected energy from targets. The radar sensor measures distances, movements, and velocity. The sensor calculates the distance to an object by measuring the reflection of a high-frequency signal from that object. The transmitted signal is reflected by buildings, liquids...

Doppler radar sends the energy in pules and listens for any returned signals.

WHAT HAPPEND DURING 1933 - 1934?

In 1933 Hitler took power in Germany and the German navy began researching remote measurement technology with radio waves.

In 1934, research began in Russia, achieving success with an aircraft detection range of up to 70 kilometers.

Aircraft detection before radar