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Modern radars generally perform all of these MTI techniques as part of a wider suite of signal processing being carried out by digital signal processors. MTI may be specialized in terms of the type of clutter and environment: airborne MTI (AMTI), ground MTI (GMTI), etc., or may be combined mode: stationary and moving target indication (SMTI).
Pulse-Doppler typically uses medium pulse repetition frequency (PRF) from about 3 kHz to 30 kHz. The range between transmit pulses is 5 km to 50 km. Range and velocity cannot be measured directly using medium PRF, and ambiguity resolution is required to identify true range and speed.
The goal is to find the optimal space-time weights in -dimensional space, where is the number of antenna elements (our spatial degrees of freedom) and is the number of pulse-repetition interval (PRI) taps (our time degrees of freedom), to maximize the signal-to-interference and noise ratio (SINR). [2]
Pulse Compressor: Frequency coded; Transmitter. Type: Grid-pulse helix TWT; Output power: 1.5 kW peak 4 percent duty cycle; Number of frequencies: More than 100; Transmission patterns : Pulse Doppler: 32-pulse batches; MTI : 4-pulse batches; Frequency agility: pulse-to-pulse frequency agility; Director pedestal
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Frequency-modulated continuous-wave radar (FM-CW) – also called continuous-wave frequency-modulated (CWFM) radar [6] – is a short-range measuring radar set capable of determining distance. This increases reliability by providing distance measurement along with speed measurement, which is essential when there is more than one source of ...
After Sealyham terrier, Stache, won Best in Show in 2023, hundreds of dogs will look to earn the title in 2024 and the grand prize of $20,000 that comes with it.
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