general information
research areas
research groups
Research Areas

Planetary Exploration

  • Instrument development for Pluto Fast Flyby Mission
  • Rings of Saturn and Uranus and atmospheres of outer planets (Voyager data analysis)
  • Atmosphere and clouds of Venus
  • Venus radar mapper studies of surface geomorphology (Magellan Project)
  • Radar studies of icy targets (Jupiter's moons; polar caps on Mercury, Mars, and the Moon)
  • Galileo Radio Science Team leadership (Jupiter orbiter)
  • Mars Global Surveyor Radio Science Team leadership
  • Uplink radio science high efficiency signal processing computer
  • Supporting theoretical and modeling studies
Ionospheric and Magnetospheric Physics
  • Very Low Frequency wave propagation and amplification
  • Controlled wave-injection experiments
  • Satellite observations of plasma waves
  • Computer simulation of wave-particle interactions
  • Precipitation and dynamics of the Radiation Belt particles
  • South Pole and Palmer, Antarctica, observations of wave and particle phenomena
  • Ionospheric modification by high-power radio waves
  • VLF/LF remote sensing of ionospheric disturbances
  • Lightning discharges and their coupling to the ionosphere
  • Computer vision techniques applied to analysis of auroral images
Radar and Radio Remote Sensing of the Environment
  • Development of HF ocean sensing radar
  • Interpretation of radar observations of natural, rough surfaces
  • Numerical electromagnetics in remote sensing
  • Undersea communication at ultra-low frequency
  • Studies of the geophysical environment and telecommunication channels
  • Very low frequency remote sensing
  • Global radio noise survey at ELF and VLF
  • Remote sensing of auroras and other high magnetic latitude phenomena
  • Monitoring ULF magnetic field fluctuations along the San Andreas fault
Wireless Communications
  • Cellular radio systems/networks
  • Wireless local area networks
  • Wireless Ad Hoc and Sensor Networks
  • Satellite Communications
  • Mobility issues in large networks
  • Multiple access techniques and dynamic spectrum management
  • Construction of rate-regions and designs for multi-user transmission
  • Channel assignment/handoff and frequency reuse
  • Multiple antenna systems
  • Space time coding and signal processing
  • Multipath mitigation techniques
  • Adaptive modulation, coding, power control
  • Energy-constrained communications
  • Communications for distributed control
  • Fundamental analysis and modeling of time-varying channels
  • Propagation in and around buildings
Optical Communications
  • Single-mode optical fiber
    • Ultra-broadband optical amplifiers based on parametric interactions in fiber
    • Impact and mitigation of fiber nonlinearities in transmission systems
    • Modulation and detection techniques for robust and spectrally efficient transmission
  • Multi-mode optical fiber
    • Optimal transmission techniques using adaptive spatial filtering to mitigate modal dispersion and enable spatial multiplexing
  • Optical fiber networks
    • Broadband optical access networks
    • Optical interconnect and backplane
  • Free-space optical systems
    • Communication techniques to mitigate atmospheric turbulence
    • Free-space communication based on microelectromechanical systems
DSL Communications
  • Subscriber line interface circuits
  • Information-theoretic capacity bounds
  • High speed-tranmission techniques
  • Crosstalk mitigation methods
Signal Processing
  • Signal processing hardware for spacecraft radio science instruments
  • High performance low power digital signal processor design
  • Custom VLSI for high performance signal processing
  • Energy-efficient FFT algorithms and architectures
  • Circuit architectures for low-power personal communications
  • Neural network algorithms and hardware design
  • Fast algorithms for matched filtering of wide band signals
  • Parallel architectures
  • Very low power memory and processors for spaceflight applications
  • Wavelet theory
  • Application of wavelet transformations to noise reduction and RFI excision
  • Radio Astronomy with Stanford field site antennas

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