Kristofer S.J. Pister (Advisor)

Research Advised by Professor Kristofer S.J. Pister

Pister Group:  List of Projects | List of Researchers

Branko Kerkez

Alumni
Electrical Engineering and Computer Sciences
Professor Kristofer S.J. Pister (Advisor)
Ph.D. 2012

Actuated Mobile Sensing in Distributed, Unstructured Environments

Andrew Tinka
Kristofer S.J. Pister
2012

Mobile sensor networks present opportunities for improved in situ sensing in complex hydrodynamic environments such as estuarial deltas. This dissertation considers the design and implementation of the mobile sensor network system that was built as part of the Floating Sensor Network project for use in the Sacramento-San Joaquin Delta in California over the 2007-2012 time period. Individual Lagrangian sensor units collect hydrodynamic state information, which is then transmitted to a centralized server and assimilated to produce a state estimate for the entire hydrodynamic system....

Mobility in Wireless Sensor Networks

Ankur Mehta
Kristofer S.J. Pister
Michel M. Maharbiz
Alexandre Bayen
2012

The combination of mobility with wireless networks greatly expands the application space of both robots and distributed sensor networks; such a pervasive system can enable seamless integration between the digital and physical worlds. However, there are a number of issues in both robotic and wireless sensor network (WSN) fields that demand research, and their integration generates further challenges.

A fundamental open problem in robotic systems is the issue of self-contained localization. Especially difficult when considering small scale flying robots, the ability to determine one'...

Kevin Weekly

Alumni
Electrical Engineering and Computer Sciences
Professor Kristofer S.J. Pister (Advisor)
Ph.D. 2014

Fabien Chraim

Alumni
Electrical Engineering and Computer Sciences
Professor Kristofer S.J. Pister (Advisor)
Ph.D. 2014

Applied Estimation of Mobile Environments

Kevin Weekly
Alexandre M. Bayen
Kristofer S.J. Pister
Costas J. Spanos
Steven D. Glaser
2014

For many research problems, controlling and estimating the position of the mobile elements within an environment is desired. Realistic mobile environments are unstructured, but share a set of common features, such as position, speed, and constraints on mobility. To estimate within these real-world environments requires careful selection of the best-suited estimation tools and software and hardware technologies. This dissertation discusses the design and implementation of applied estimation infrastructures which overcome the challenges of real-world deployments.

Estimating the...

FMCW Lidar: Scaling to the Chip-Level and Improving Phase-Noise-Limited Performance

Phillip Sandborn
Ming C. Wu
Bernhard Boser
Kristofer S.J. Pister
Liwei Lin
2017

Lidar (light detection and ranging) technology has the potential to revolutionize the way automated systems interact with their environments and their users. Most lidar systems in the industry today rely on pulsed (or, "time-of-flight") lidar, which has reached limits in terms of depth resolution. Coherent lidar schemes, such as frequency-modulated continuous-wave (FMCW) lidar, offer significant advantage in achieving high depth resolution, but are often too complex, too expensive, and/or too bulky to be implemented in the consumer industry. FMCW, and its close cousin, swept-source optical...

Wireless Power Monitoring at Plugs and Panels

Michael Lorek
Kristofer S.J. Pister
Michel M. Maharbiz
Paul Wright
2015

In 2012, electricity generation was responsible for over 30% of carbon emissions in the US - surpassing the transportation sector - and predictions to 2040 show this trend continuing with current technologies. Electrical submetering provides improved spatial and temporal resolution into how buildings use their energy, and case studies have shown that improvements driven by submetering data can lead to 5-30% reductions in electrical energy usage. However, traditional building submetering technologies present unfavorable cost, installation, and form factor attributes that inhibit the...

High-Q AlN Contour Mode Resonators with Unattached, Voltage-Actuated Electrodes

Robert Schneider
Clark T.-C. Nguyen
Kristofer S.J. Pister
Liwei Lin
2015

High-Q narrowband filters at ultra-high frequencies hold promise for reducing noise and suppressing interferers in wireless transceivers, yet research efforts confront a daunting challenge. So far, no existing resonator technology can provide the simultaneous high-Q, high electromechanical coupling (k2 ), frequency tunability, low motional resistance (Rx), stop band rejection, self-switch ability, frequency accuracy, and power handling desired to select individual channels or small portions of a band over a wide RF range. Indeed, each technology...

Michael Lorek

Alumni
Electrical Engineering and Computer Sciences
Professor Kristofer S.J. Pister (Advisor)
Ph.D. 2015