Radar System | Module 5: Imaging Radar Systems by Prakhar Chauhan | Learn Smarter
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Knowledge
Module 5: Imaging Radar Systems

Imaging radar systems utilize advanced techniques to produce high-resolution images, surpassing simple detection and tracking capabilities. Key concepts include range and azimuth resolutions, pulse compression techniques, synthetic aperture radars (SAR), and inverse synthetic aperture radars (ISAR). These technologies enhance imaging capabilities even under challenging conditions such as poor weather or darkness.

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Sections

  • 6

    Imaging Radar Systems

    This section covers advanced radar techniques used for creating high-resolution images of targets and scenes, focusing on concepts like resolution, pulse compression, and synthetic aperture radar.

    Learning Practice

  • 6.1

    Imaging Radar Resolution Concepts

    This section details the concepts of radar resolution, specifically focusing on range and azimuth resolution critical for imaging radars.

    Learning Practice

  • 6.1.1

    Range Resolution

    Range resolution is the radar system's ability to distinguish between targets at different distances, defined by the bandwidth of the transmitted signal.

    Learning Practice

  • 6.1.2

    Azimuth (Cross-Range) Resolution

    This section presents azimuth resolution in radar imaging, explaining its importance, underlying principles, formulas, and the limitations of conventional radar systems.

    Learning Practice

  • 6.2

    Pulse Compression Techniques

    Pulse compression techniques enhance radar systems by combining long pulses for high SNR with modulation for fine range resolution.

    Learning Practice

  • 6.2.1

    Linear Frequency Modulation (Lfm) - Chirp Pulse

    The section covers the principles and applications of Linear Frequency Modulation (LFM) in radar technologies, particularly the use of chirp pulses for effective radar signal processing.

    Learning Practice

  • 6.2.2

    Barker Codes (Phase Coded Pulses)

    Barker codes enhance radar performance by shifting the phase of transmitted pulses according to a binary sequence, optimizing autocorrelation properties.

    Learning Practice

  • 6.3

    Synthetic Aperture Processing (Sar)

    Synthetic Aperture Radar (SAR) utilizes the motion of a radar system to simulate a large antenna, providing high-resolution images of surfaces.

    Learning Practice

  • 6.4

    Inverse Synthetic Aperture Radar (Isar) Imaging

    ISAR is a radar imaging technique that produces high-resolution 2D images of moving targets using the target's motion to simulate a synthetic aperture.

    Learning Practice

References

Untitled document (22).pdf

Class Notes

Memorization

What we have learnt

  • Imaging radar systems provi...
  • Range and azimuth resolutio...
  • Pulse compression technique...

Final Test

Revision Tests