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Signal Processing

Signal Processing

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Introduction to RF Stealth — Recommend this title to your library

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Stealth signal processing consists of squeezing the maximum performance out of the signal processed, regardless of the amount of “number smashing” that may be required. This includes minimizing straddling losses, reducing RF interference, and limiting self-noise. It also means choosing a waveform that has lowest inherent losses. Furthermore, the output signal-to-noise ratio must be the minimum acceptable, not the best available. Even so, there are inevitably cost-performance trade-offs that must be made, which revolve around word length and total number of arithmetic operations.

Chapter Contents:

  • 7.1 Introduction to Stealth Signal Processing
  • 7.1.1 Example Signal Processors
  • 7.1.2 Basic Digital Signal Processing
  • 7.1.3 Matched Filtering and Straddling Losses
  • 7.1.4 Multiple Time around Echoes, Multipath, and Eclipsing
  • 7.2 Noise in Digital Signal Processing Systems
  • 7.2.1 Introduction
  • 7.2.2 Noise and Gain in Signal-Selective Networks
  • 7.2.3 Effects of Processing Order on Dynamic Range
  • 7.2.4.1 Pulse Compression and Beamforming
  • 7.2.5.2 Scale Factor Changes, Saturation, and Truncation
  • 7.2.6 Saturation, Quantization, and Optimum Signal Level
  • 7.2.7 Noise in Prefiltering
  • 7.2.8.1 Saturation and Truncation Introduced by Prefiltering
  • 7.2.9.2 Coefficient Noise and Stability of Prefilters
  • 7.2.10 Noise and Signal Response in Narrowband Filtering
  • 7.2.11 Roundoff, Saturation, and Truncation
  • 7.2.12 Multiplier Roundoff Noise
  • 7.2.13 Saturation and Truncation During FFT Processing
  • 7.3 Air Target - Search, Acquisition, Track
  • 7.3.1 Air Target Search
  • 7.3.2 False Alarm Control
  • 7.3.3 Air Target Tracking
  • 7.4 Terrain Following/Terrain Avoidance
  • 7.5 Real Beam Ground Map
  • 7.6 Doppler Beam Sharpening
  • 7.7 Synthetic Aperture Radar (SAR) Mapping
  • 7.8 Ground MTI and MTT
  • 7.8.1 Ground Moving Target Overview
  • 7.8.2 Ground Moving Target Thresholding
  • 7.8.3 GMT Tracking
  • 7.9 Quiet Weapon Delivery
  • 7.10 Data Links
  • 7.10.1 Introduction
  • 7.10.2 Data Compression
  • 7.10.3 Jammer Nulling
  • 7.11 Adaptive Processing
  • 7.12 Exercises
  • 7.13 References

Inspec keywords: interference (signal); losses; signal processing; interference suppression

Other keywords: RF interference reduction; number smashing; self-noise limitation; straddling loss minimization; stealth signal processing; output signal-to-noise ratio; arithmetic operation; cost-performance trade-off

Subjects: Electromagnetic compatibility and interference; Signal processing and detection; Signal processing theory

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