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—Redundant metering is frequently used to verify the integrity of billing data reported by advanced metering infrastructure, but the redundant measurement introduces a potential confidentiality leak. We propose a way to encode the redundant measurement at a bit rate below its entropy, so that it cannot be decoded from the encoded bits alone. In this way, we(More)
—Synchronized voltage and current phasor measurements provided by phasor measurement units (PMUs) have the potential to augment power system monitoring, control, and protection functions. PMUs use the Global Positioning System (GPS) to synchronize measurements across a wide geographical area. Unfortunately, low-received-power, unencrypted civil GPS signals(More)
The purpose of this study was to characterize the forces resulting from Harrington distraction of the spine in an experimental model of scoliosis in the rat, in order to establish both the similarity of this model to human scoliosis and identify potential force parameters that may be useful for clinical decision-making. Harrington distraction was performed(More)
—With the launch of the Compass-M1 satellite on 14 April 2007, China is set to become the latest entrant into global navigation satellite systems (GNSS). Understanding the interoper-ability and integration of the Chinese Compass with the current GNSS, namely the U.S. Global Positioning System (GPS), the Eu-ropean Galileo, and the Russian GLONASS, requires(More)
His current research interests include GNSS integrity and modernization. She obtained the Ph.D. degree in electrical engineering at Stanford University. Her current research interests include GNSS signal and code structures, GNSS receiver architectures, and interference mitigation. She has received the Institute of Navigation (ION) Early Achievement Award.(More)
  • Sam Pullen, Grace Gao, Carmen Tedeschi, John Warburton
  • 2012
RF interference (RFI) has been and will continue to be a significant worry for GNSS users. This paper introduces several different types of RFI, categorizes them based upon the intent (if any) of the RFI transmitter, and then examines a relatively new and growing source of RFI: Personal Privacy Devices (PPDs) that aim to prevent people and vehicles from(More)
Her current research interests include Galileo signal and code structures, GNSS receiver architectures, and GPS modernization. Seebany Datta-Barua is a Ph.D. candidate under the guidance of Professor Per Enge and Dr. research interests lie in the study of mid-latitude space weather as it pertains to the integrity and availability of GPS-based augmentation(More)
Her current research interests include Galileo signal and code structures, GNSS receiver architectures, and GPS modernization. which develops satellite navigation systems based on the Global Positioning System (GPS). He has been involved in the development of WAAS and LAAS for the FAA. Per has received the Kepler, Thurlow and Burka Awards from the ION for(More)
R F interference (RFI) has been and will continue to be a significant worry for GNSS users. Because the signals from GNSS satellites are very weak by the time that user equipment receives and processes them, they are especially vulnerable to RFI. Signals that overlap GNSS frequencies are likely to come from transmitters much closer than the satellites and,(More)