Signal Processing

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Contents

Signals

Electromagnetic Spectrum

IR != thermal

Dimensions: 1D, 2D and more

Time: single point in time measurement. 1D: Sound 2D: Images, Video 3D: Volumetric(voxel, Tomography) vs Depth (stereo binocular and trinocular)

Analog

Digital

Acquisition

Absolute vs. Relative

Differential

Physical Sensor Response

Multisensor Beam Forming

echo suppression AEC (acoustic echo cancellation)

Adaptive Feedback Cancellation

Information and Entropy

Nyquist–Shannon

SNR (Signal to Noise Ratio)

Modulation

Spark-gap, CW, AM, FM, Narrow FM, SSB, FSK, AFSK, PSK, Quadrature, Hell, PWM (Pulse Width Modulation), PDM (Pulse-Density Modulation) and many, many more.

Bandwidth

Channel Capacity

Compression

Error Detection and Correction

FEC

Transforms

Fourier Analysis (FFT)

Fourier Synthesis (IFFT)

Convolution

Correlation and Covariance

Autocorrelation

Amplification, Filtering, Conditioning

Amplifier classes

TIA (TransImpedance Amplifier) -- often used with PIN photodiode and APD (avalanche photodiode) for light to voltage converters

Feedback

FIR (Finite Impulse Response)

IIR (Infinite Impulse Response)

LMS (Least Mean Squares)

RLS (Recursive Least Squares)

MMSE (Minimum Mean Square Error)

Network Synthesis Filters

Butterworth

Chebyshev

Elliptic filter

Comb filter

Signal Detection

Matched filter

Control, Signal Modeling, Sensor Fusion, State Estimation, Tracking, Prediction

PID (Proportional Integral Derivative)

Particle Filter

Kalman filter

RNN (Recurrent Neural Network)

DSP (Digital Signal Processing)

software tools

hardware tools

operating system support (real time)