Services / Modeling & Test
System Engineering & Modeling
RF and optical link budgets, optical-fiber characterization — polarization-mode dispersion, OTDR, and DWDM attenuation versus wavelength — ionospheric HF communications modeling of reliability and latency, and availability modeling for millimeter-wave and free-space-optics links. Theory checked against measurement.
- RF & optical link budgets
- HF ionospheric modeling
- FSO / MMW availability
- FEM antenna design
- Fiber characterization
- Lab simulation & measurement
Representative work
When the answer has to be a number.
NASA "Ride the Light"
Ground-to-space optical attenuation modeling at 1064 nm for NASA’s Ride-the-Light project.
FSO availability from weather data
Five-minute Heathrow visibility statistics converted to dB/km attenuation — the foundation for FSO link-availability versus distance budgets.
HF communications modeling
Ionospheric HF propagation reliability as a function of frequency, time of day, season, and year — with corresponding point-to-point latency modeling and measurements.
7 MHz antenna in a constrained site
Finite-element design of a 7 MHz antenna for a limited-space environment, with 2D and 3D patterns computed over actual ground conductivity.
Optical fiber link budgets
Link budgets that automatically ingest measured attenuation, chromatic dispersion, and PMD versus wavelength, plus splice losses and laser/modulation types.
OC-192 PMD qualification
PMD measurement across an aging fiber plant to tag the individual fibers that could not support OC-192 before a network upgrade.
Radome ice attenuation
Attenuation versus radome ice thickness from the measured complex permittivity of ice across microwave frequencies.
Lab fade simulation
Voltage-controlled attenuator driven by a function generator to create arbitrary fade events and verify switching in a protected SONET ring.
Satellite noise measurement & modeling
Noise measurements and line-of-sight modeling that traced ground-station interference to a hydroelectric dam.
Have a system to model?
Describe the link, the constraint, or the unknown — we'll come back with an engineering answer, not a sales call.
Email info@spectranet.net- Office
- 2632 29th Ave. W.
Seattle, WA 98199 - Phone
- 206.790.0295