Design Approach

Design Approach

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This chapter pertains to an FMCW navigation radar named Calypso. The name is the author's pseudonym for an actual FMCW navigational radar developed for navigation jointly by Philips Research Laboratory (PRL), Redhills, Surrey, England and Hollandse Signaal Apparaten B.V. (now Thales Netherlands B.V.), Hengelo, The Netherlands. This radar was the precursor of today's PILOT and Scout navigational radars. The contents of this chapter have been reproduced from and with permission. We shall examine issues like, power budget, noise figures, noise cancellation, ADCs, calibration and verification, MTIs, and so forth. We shall also investigate issues like single antenna operation and reflected power cancellers (RPCs) as well as removal of range ambiguities.

Chapter Contents:

  • 7.1 Introduction
  • 7.2 Calypso Design Parameters
  • 7.3 Doppler Tolerance
  • 7.4 Beam Patterns/Coverage Diagram
  • 7.5 FMCW Description
  • 7.6 Receiver Noise Figure
  • 7.7 AM Noise Cancellation
  • 7.8 FM Noise Cancellation
  • 7.9 IF Ampli?er
  • 7.10 Anti-Alias Filter and ADC
  • 7.11 Control Circuitry
  • 7.12 Calibration and Veri?cation
  • 7.13 Image Reject Mixers
  • 7.14 Moving Target Indication
  • 7.15 Single Antenna Operation
  • 7.15.1 Re?ected Power Canceller
  • Performance of the RPC
  • 7.16 Ambiguous Returns
  • 7.17 Performance of Calypso FMCW Radar
  • 7.18 Summary

Inspec keywords: FM radar; CW radar; calibration; navigation

Other keywords: calibration; power budget; reflected power canceller; PILOT navigational radar; single antenna operation; noise cancellation; FMCW navigational radar; noise figures; Scout navigational radar; Calypso FMCW navigation radar

Subjects: Measurement standards and calibration; Radionavigation and direction finding; Radar equipment, systems and applications

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