Phased array radar, or phase-controlled electronically scanned array radar, has the ability to quickly and accurately convert the beam, enabling the radar to complete the scanning of the whole airspace within 1 minute.
The so-called phased array radar is a radar array composed of a large number of identical radiation units, each radiation unit is independently controlled by wave control and phase shifter in phase and amplitude, and can obtain accurate and predictable radiation pattern and beam pointing.
When the radar is working, the transmitter distributes the power to each antenna unit through the feeder network, and radiates the energy through a large number of independent antenna units and performs power synthesis in space to form the required beam pointing.
How it works:
Different from the traditional mechanical scanning mode of radar (beam scanning is realized by the rotation of radar antenna), phased array radar adopts electronic scanning, that is, scanning by using electricity to control the direction change of radar beam.
By controlling the time difference of each antenna element, the main beam of different phase (direction) can be synthesized, and the phase can be changed in both axes.
Phased array radar uses "phase shifter" to realize radar beam rotation, and each antenna unit is controlled by its own independent switch.
Categories:
Phased array radar can be divided into two types: Passive passive (PESA) and active active (AESA).
Advantages and Features:
Fast scanning: Phased array radar can complete the scanning of the whole airspace in 1 minute, much faster than traditional radar.
Multi-target tracking: can search, detect and track multiple batches of targets in different directions and different heights at the same time, especially suitable for multi-target, multi-direction, multi-level air attack combat environment.
High maneuverability: Due to the use of electronic scanning, phased array radar does not require mechanical rotation, so it has higher maneuverability.
Diverse functions: In addition to the basic detection function, phased array radar can also be used for navigation, target recognition, communication and other purposes.
Characteristics of electrical scanning: The mode of beam control using phase shifters is called electrical scanning, which has higher flexibility and speed than traditional mechanical scanning. Through electrical scanning, phased array radar can quickly search and track targets in different directions, and achieve the coverage of the whole airspace.
Application: Phased array radar is widely used in military applications because of its high performance.
Mskyeye LW-R25-K three-coordinate low altitude surveillance radar is a kind of low altitude small target surveillance radar with advanced technology and excellent performance.
At the same time, this type of radar adopts full-phase pulse pulse Doppler technology, microstrip patch array antenna technology, pitching digital beamforming technology, simultaneous multi-beam receiving technology, monopulse Angle measurement technology, TWS technology and other modern advanced radar technologies to realize azimuth and pitching two-dimensional active phase scanning, and has the characteristics of fast beam scheduling, high data rate, high Angle resolution and high precision measurement.
It can be used for air surveillance of border defense, coastal defense, oil and gas fields, oil depots, Bridges, reservoirs, nuclear power plants, anti-terrorism and other important places.