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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