Research engineer profile

Woodland Hills, CA

Lead software architect for GNSS software-defined radio.

• Design, test, and integrate VHDL hardware accelerators for advanced GPS functions.
• Design and test real-time C software for advanced GPS applications on an EPP chip.
• Prototype GPS algorithms in MATLAB for translation into real-time systems.
• Validate VHDL and real-time software against MATLAB reference algorithms.
• Engineering manager / team lead on customer R&D projects; direct customer communication on goals, iteration, and status.
• Author research trade studies, feasibility and performance studies, and program reports.
• Mentor new team members and delegate scoped tasks.

Navigation research.

GPS software-defined radio and embedded systems work.

Oxford, OH

• Analysis of Kalman Filter and Particle Filter algorithms for autonomous navigation.
• GUI design for GPS user position calculation.
• Ionosphere delay compensation for single-frequency GPS receivers.
• Autonomous vehicle navigation using signals of opportunity.

• MATLAB UI for Dilution of Precision calculation for pseudolites.
• Vision-aided inertial navigation integration with laser-based SLAM.
• AI programming using a Java-based behavior framework.

Oxford, OH

Tutored math, statistics, EE, and CS courses from 100- to 400-level.

With Jeff Dickman

An adaptive cascaded electronic protection processing system for global navigation satellite system (GNSS) threat mitigation. A precorrelation characterization component provides parameters describing a plurality of received signals; a correlator produces correlation results for each; a spatial weight contribution component determines an optimal set of digital beam-forming weights via an optimization process driven by those parameters; and a postcorrelation characterization component imposes constraints on the optimization based on the correlation results.

With Sanjeev Gunawardena, Jeff Dickman

A correlator system with a plurality of numerically controlled oscillators and a multiplier that receives an input stream representing a received signal. A carrier multiplexer selects between NCO outputs and feeds the multiplier; a code generator provides a replica code; a delay component provides a delayed copy of that code; and a code multiplexer selectively routes each to the multiplier.

With Sanjeev Gunawardena, Jeff Dickman

A navigation-system correlation engine that despreads a received signal. A correlator evaluates the received signal against a replica to produce a correlation result; a packet encoder wraps that result in a packet with a destination address and a source address; and an I/O interface delivers the packet to another component in the navigation system.

With Jeff Dickman, Reza Ahmadi, Sanjeev Gunawardena

An RF receiver system whose front end digitizes the received signal and whose spoof detection system compares the power spectral density of the digitized signal against a predetermined baseline PSD to detect the presence of a spoofing signal component.

With Sanjeev Gunawardena, Jeff Dickman

An adaptive sample quantization system for RF receivers. An ADC directly coupled to the antenna produces consecutive digital samples; a quantizer determines a mode from those samples, selects thresholds based on the mode, and compares each sample against the thresholds to generate reduced-bit output samples that mitigate interference while preserving the encoded data.