Bedford Signals Corporation

Software

Embedded Software

Boot Loader

  • Denx U-Boot and Customized U-Boot Device Drivers

Operating System

  • GNU/Linux and Custom Linux Device Drivers

Embedded Applications

  • IEEE 802.11s Mesh Networking drivers for custom hardware with our proprietary precise synchronization protocol
  • Protocol implementing fading mitigation and interference cancellation through collaboration of single antenna radios
  • Process implementing adaptive analog canceller control
  • Drivers for programmable filter-equalizer, fading channel emulation, and digital canceller

Control Interface

  • Text interface from secure shell command line, telnet, or raw TCP.
  • Standard Commands for Programmable Instruments (SCPI).

GNU Development Environment

  • Native gcc compiler including standard libraries.

Matrix Manipulation for Signal Processing

  • Basic Linear Algebra Subprograms (BLAS) and the Linear Algebra Package (LAPACK)
    correlation matrix generation from samples
    simultaneous linear equations with multiple solutions
    Eigenvalue and Eigenvector calculation
  • Multidimensional FFT.

Simulation Modules: C or C++ Code

Coordinate Transformations Between Four Different Systems

  • WGS 84 (latitude, longitude, altitude)
  • Earth Center Earth Fixed (x, y, z)
  • Local (east, north, up)
  • Platform (right, forward, up)

Antenna Arrays

  • Carrier and Modulation Delay and Doppler From Transmitter Antenna Element to Receiver Antenna Element (US Patent No. 7782976)
  • Interpolated Antenna Element Gains from Tables

Analog Processing

  • Noise Figure
  • Nonlinear, Leakage, and Image Models
  • Local Oscillator and Mixer Models
  • RF and IF IIR Filter Models
  • Automatic Gain Control
  • ADC Quantization

Transceivers

  • BPSK, QPSK, MBOC, SRRC, CCSK, GMSK, OFDM
  • Platform Position, Velocity, Acceleration, and Jerk
  • Platform Orientation and Angular Velocity
  • Carrier and Code Doppler

GPS Satellites

  • Satellite Position and Velocity from Orbit Data
  • C/A, P, and M Code

Jammers

  • CW, Swept Frequency, Gaussian, Pulsed, GNSS-like, Communications