Radar

  • Pulse Doppler, MIMO, FMCW, CW
  • Clutter Suppression
    • Space-Time Adaptive Processing (STAP)
    • Bistatic, MIMO
    • Range-dependence compensation
    • Clutter modeling
  • MTI Detection/CFAR
  • Pulse compression
  • Doppler/Range tracking
  • Applications:
    • Over The Horizon Radar (OTHR)
    • Vital Signs Detection / Estimation
    • Multi-slope multi-emitter wearable projectile detection
    • Laser Radar ground and airspeed estimation / tracking

Modulation/Demodulation

  • Software Defined Radio
  • ITU/TIA/ARIB air interfaces
  • OFDM,CPM/CPFSK, PSK, FSK, QAM
  • Spread spectrum: Direct sequence, Frequency hopping
  • JTRS-compliant waveforms: MIL-STD-188-181, KY-57/KYV-5, SINCGARS, Havequick, LPE
  • Carrier/timing synchronization
    • Data-aided and non-data-aided frequency and phase tracking
    • Phase noise and Doppler tracking at very low SNR
  • Interference and distortion
    • Channel estimation
    • Adaptive/Blind channel equalization
    • Interference and echo cancellation
  • Symbol detection/decoding
    • Viterbi decoding
    • Turbo Decoding
    • Multi-dimensional trellis-coding

Deep Learning / Machine Learning

  • Algorithms / architecture
  • AlexNet, ResNet, SqueezeNet, etc
  • Pre-processing
  • Training optimization
  • Transfer learning
  • Strategies for training data collection and generation

Speech Processing

  • Speech enhancement
  • Spectral subtraction, MMSE, Model-based
  • Speech coding. xx-CELP, LP, Sub-band, ADPCM, CVSD
  • Voice Activity Detection, Hidden Markov modeling, Vector quantization
  • Linear prediction and cepstral analysis
  • Model-based approaches, Optimization based on human perception

Precision Test & Measurement

  • Spectral analysis
  • Vector signal analysis
  • High precision industrial measurement
    • FMCW radar distance/depth measurements
    • Vibration and vortex analysis
  • High fidelity phase noise analysis

General DSP

  • Detection and Estimation
  • Interference and Noise Reduction
  • Multirate and adaptive algorithms
  • Sub-space methods
  • Cyclostationary analysis, higher-order statistics
  • Pattern classification
  • SIGINT / COMINT / ELINT
  • Modulation and emitter recognition