Remote Sensing - Spectral Imaging

 

Remote Sensing of Range (Distance, Position) and Velocity

 

RADAR

LIDAR

SONAR

 

 

Remote Sensing of Magnetic Fields - Remote Optical Magnetometry - Magneto-Optical Phenomena

 

Faraday Effect (Rotation)

A magnetic field rotates the polarization of light. Rotation proportional to magnetic field strength.

  Surface Magneto-Optic         Kerr Effect (SMOKE)

Light reflected from a magnetized surface (object) can change in polarization and intensity.

Remote magnetic sensing of underwater objects

Use of lasers - Faraday Effect and SMOKE

 

 

Sensing 

 

Sensing "electric activity"

Magnetic resonance current density imaging (MRCDI)

Current density imaging with Magnetic Resonance (MR)

(MR-based Magnetometry)

 

 

 

Human Remote Sensing - Human Spectral Imaging

 

Thermal Sensing - Long-Wave Infrared (LWIR)

Hyperpectral imaging - Wikipedia

 

 

Thermal Sensing - Long-Wave Infrared (LWIR)

Infrared - Wikipedia 

 

 

Doppler RADAR Sensing of Human Gait (cf. walking)

ref. p.20 

 

 

 

 

 

Medical or Physiological Monitoring (Sensing) - Physiological Spectral Imaging

Physiological Monitoring (Sensing) includes Remote Physiological Monitoring (Sensing) performed with non-contact remote techniques which use physiological monitoring RADAR systems.

 

 

Remote Cardiorespiratory Monitoring (Sensing) with RADAR

Doppler RADAR

Chip Transceiver (Emitter and Receiver)

(Droitcour A.D. dissertation - Stanford)

 

 

FMCW RADAR

Horn antenna - Katabi MIT lab "EQ-Radio"

RADAR approach combined with algorithms for emotion detection

 

 

FMCW/Homodyne RADAR

Parabolic antenna (dish) - RADAR cardiogram at 15 ft

Remote Vital Sign Monitor (RVSM) for Olympic athletes (Atlanta Olympics1996) 

 

 

 

 

Neural Monitoring (Neural Sensing) 

Electroencephalography

(EEG)

 

 

Magnetoencephalography with SQUID magnetometers 

Superconducting magnetometers

 

Magnetoencephalography with atomic magnetometers

Optical magnetometers - SERF magnetometers

 

(structural) MRI - Magnetic Resonance Imaging

 

 

functional MRI (fMRI)

 

 

functional Near-Infrared Spectroscopy Imaging (fNIRS)

 

 

 

 

Magnetic Resonance - Magnetic Resonance Imaging (MRI)

 

Magnetic Resonance: A magnetic field splits spin energetic levels and induces spin precession. Energy transitions under conditions of Magnetic Resonance.

MRI: Polarization

A magnetic field induces spin polarization and a net magnetization

MRI: Detection

An RF tips the magnetization with energy absorption. During magnetization decay a signal (FID) is emitted.

MRI: Polarization enhancement techniques

MRI: Detection RF pulse design

Inducing a Steady State Magnetization providing a continuously emitted signal from the subject