What is a phase field?

Flow field is a type of electromagnetic detection system of wave detection, which is usually associated with a radar that is based on the transmission of air radio waves. It can also be built on the Sonar concept for underwater scanning objects with sound waves and has been investigated since 2011 using the front of optical waves. The concept is based on earlier versions of the radio antenna and monitors the same basic principle, where the reflection of radio waves outside objects is used to determine their location and direction of movement. The primary difference between the phase radar and the standard radar bowl is that the phase system does not have to be physically moved or turned to scan the passenger object in the sky.

radar signals are reduced in efficiency outside the limited angle of projection, so the antenna of an early bowl was placed along the line to expand their overall view of the ascel. One of the earliest forms of this has developed during studyNo wars and preceded the phase field technology, known as an American distant range of radar installations in the US in Arctic and Canada. When the phase field technology was improved in 1958, Russia developed one of the first versions of working systems in the early 1960s that was coded by the North Atlantic Treaty (NATO) as an installation of Dog House, Cat House. The device consisted of radar installations that could effectively scan at least one third of the Russian border, where it bordered Europe for incoming missile attacks, along with automated nuclear missile lightening systems to destroy any possible targets.

The most advanced radar system with phase field since 2006 has been a sea X-Panek radar (SBX) developed by the US military to monitor ballistic missiles and other fast-moving objects in the atmosphere or space surrounding the country. SBX contains 45,000 radiant elements that are an individual antenna, of nothingEach transmits the radio signal. The exact timing of each antenna signal and how it overlaps with its closest neighbors allows SBX to create a wave front that can actively scan objects moving through its field of view (FOV). This includes a cone of 120 °, so the SBX system includes four radar units to cover the entire haemisphere of the globe simultaneously.

Phase field technology for radar systems is very complex and requires computer controls that are fast and reliable. The SBX system must change the direction of the total radar beam once every 0.000020 ^{th seconds or once every 20 microseconds to be effective. As a result, the advanced phase fields are very expensive compared to traditionally connected radars, while the SBX system costs almost $ 900,000,000 (USD).}

More modest types of phase field technology include ultrasonic field ultrasound somewhere used in medical display and to scan interior metal structuresfor defects. Sound waves overlap to increase the overall signal and change its direction of scanning to look for interior functions. The phase field converter used in such a device has a sound wave probe individually, which are activated in groups of 4 to 32 to increase image quality.

Phased Array Optics (PAO), although it is only theoretical since 2011, is investigated for the ability that it would have to produce a three -dimensional holographic landscape that would be indistinguishable by the naked eye from the real world. This technology would have to be able to manipulate light waves for constructive and destructive intervention, as is the case with radio waves, at a level that is less than the natural wavelength of the light itself. Systems that would be necessary would include advanced computers for fast signal processing and spatial light modulator (SLM) for checking when and how each wavelength of light was manipulated. The projections are that in PoloThe 21st century.