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2. Smart antenna - Wikipedia

   en.wikipedia.org/wiki/Smart_antenna

   Smart antennas (also known as adaptive array antennas, digital antenna arrays, multiple antennas and, recently, MIMO) are antenna arrays with smart signal processing algorithms used to identify spatial signal signatures such as the direction of arrival (DOA) of the signal, and use them to calculate beamforming vectors which are used to track and locate the antenna beam on the mobile/target.

3. Digital antenna array - Wikipedia

   en.wikipedia.org/wiki/Digital_antenna_array

   Digital antenna array (receiver segment) Digital antenna array (transmitter part) Digital antenna array (DAA) is a smart antenna with multi channels digital beamforming, usually by using fast Fourier transform (FFT). The development and practical realization of digital antenna arrays theory started in 1962 under the guidance of Vladimir Varyukhin .

4. AN/TPY-2 transportable radar - Wikipedia

   en.wikipedia.org/wiki/AN/TPY-2_transportable_radar

   TPY-2 radar in travelling configuration View from the back on a deployed TPY-2 radar. The AN/TPY-2 Surveillance Transportable Radar, also called the Forward Based X-Band Transportable (FBX-T) is a long-range, very high-altitude active digital antenna array [1] [2] X band surveillance radar designed to add a tier to existing missile and air defence systems.

5. Space-time adaptive processing - Wikipedia

   en.wikipedia.org/wiki/Space-time_adaptive_processing

   For each antenna, a down conversion and analog-to-digital conversion step is typically completed. Then, a 1-D FIR filter with PRI length delay elements is used for each steered antenna channel. The lexicographically ordered weights W 1 {\displaystyle W_{1}} to W N M {\displaystyle W_{NM}} are the degrees of freedom to be solved in the STAP problem.

6. Active electronically scanned array - Wikipedia

   en.wikipedia.org/wiki/Active_electronically...

   The Eurofighter Typhoon combat aircraft with its nose fairing removed, revealing its Euroradar CAPTOR AESA radar antenna. An active electronically scanned array (AESA) is a type of phased array antenna, which is a computer-controlled antenna array in which the beam of radio waves can be electronically steered to point in different directions without moving the antenna. [1]

7. Monopulse radar - Wikipedia

   en.wikipedia.org/wiki/Monopulse_radar

   This varying signal will reach a maximum when the antenna is rotated so it is aligned in the direction of the target. By looking for this maximum and moving the antenna in that direction, a target can be automatically tracked. This is greatly eased by using two antennas, angled slightly to either side of the boresight.