High Pulse Repetition Frequency Pulse Doppler Radar

High Pulse Repetition Frequency Pulse Doppler Radar

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Pulsed radars that are not required to be Doppler sensing systems have traditionally employed low pulse repetition frequency (PRF) waveforms. A low PRF is defined as one which is sufficiently low so as to avoid range ambiguities. To avoid range ambiguity, the maximum detection range of the radar for all target and clutter returns is required not to exceed Rmu. This ensures that all returns are first-trace echoes, that is, that they fall within the first receiving period, and their range may be determined from a simple range delay timing method. Low PRF waveforms are typically low duty ratio waveforms and employ a large number of range cells matched to the range resolution of the radar distributed throughout the receiving period. Target range is therefore readily available from low PRF systems.

Chapter Contents:

  • 9.1 Introduction
  • 9.2 PRF Selection for Unambiguous Doppler/Velocity
  • 9.3 Timing Aspects of High PRF
  • 9.4 High PRF Radar Response to Clutter
  • 9.5 Surface-Based High PRF Radars
  • 9.6 Summary of the Characteristics of High PRF

Inspec keywords: Doppler radar; radar clutter; delays; radar receivers; object detection; radar resolution; radar detection

Other keywords: radar resolution; Doppler sensing system; radar receiver; delay timing method; target detection; MEMS packaging; low duty ratio waveform; clutter; PRF waveform; radar detection; high pulse repetition frequency pulse Doppler radar; first-trace echo

Subjects: Radar equipment, systems and applications; Signal detection

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