Grace X. Gao – Publications

Journal Papers

[J19]. Akshay Shetty and Grace X. Gao, GPS-Lidar Sensor Fusion Aided by 3D City Models for UAVs, IEEE Transactions on Aerospace and Electronic Systems. Submitted. [pdf]

[J18]. Arthur Chu and Grace X. Gao, Multi-Receiver Direct Position Estimation Tested on a Full-scale Fixed-wing Aircraft, IEEE Transactions on Aerospace and Electronic Systems. Submitted. [pdf]

[J17]. Enyu Luo, Ji Liu, Alexandra Bacula, Yuting Ng, Tamer Basar and Grace X. Gao, Shinerbots: Navigating Large-Scale Robot Swarms Inspired by Golden Shiner Fish, Swarm Intelligence. Submitted. [pdf]

[J16]. Sriramya Bhamidipati and Grace X. Gao, GPS Multi-Receiver Joint Direct Time Estimation and Spoofer Localization, IEEE Transactions on Aerospace and Electronic Systems. Submitted. [pdf]

[J15]. Yuting Ng and Grace X. Gao, Multipath-Aided Direct Position Estimation, Navigation. Submitted. [pdf]

[J14]. Sriramya Bhamidipati and Grace X. Gao, Improved Jamming Resilience of GPS Timing for Phasor Measurement Units using Position-Information-Aided Vector Tracking, GPS Solutions. Submitted. [pdf]

[J13]. Sriramya Bhamidipati and Grace X. Gao, Robust GPS-based Direct Time Estimation against Jamming and Meaconing for Power Systems, IEEE Transactions on Smart Grid. Submitted. [pdf]

[J12]. Yuting Ng and Grace X. Gao, GNSS Multi-Receiver Vector Tracking, IEEE Transactions on Aerospace and Electronic Systems. vol. 53, no. 5, pp. 2583-2593, Oct. 2017. [pdf]

[J11]. Liang Heng and Grace X. Gao, Accuracy of Range-Based Cooperative Positioning: A Lower Bound Analysis, IEEE Transactions on Aerospace and Electronic Systems. vol. 53, no. 5, pp. 2304-2316, Oct. 2017. [pdf]

[J10]. Liang Heng, Athindran Rakesh Kumar and Grace X. Gao, Location Hash: Private Proximity Detection Using Partial GPS Information, IEEE Transactions on Aerospace and Electronic Systems. vol. 52, no. 6, pp. 2873-2885, December 2016. [pdf]

[J9]. Grace X. Gao, Matteo Sgammini, Mingquan Lu and Nobuaki Kubo, Protecting GNSS Receivers from Jamming, the Proceedings of the IEEE. vol. 104, no. 6, pp. 1327-1338, June 2016. [pdf]

[J8]. Liang Heng, Daniel B. Work and Grace X. Gao, GNSS Signal Authentication from Cooperative Peers, IEEE Intelligent Transportation Systems. vol. 16, no. 4, pp. 1794-1805, Aug. 2015. [pdf]

[J7]. Liang Heng, Todd Walter, Per Enge and Grace X. Gao, GNSS Multipath and Jamming Mitigation Using High-Mask-Angle Antennas and Multiple Constellations, IEEE Transactions on Intelligent Transportation Systems. vol. 16, no. 2, pp. 741-750, April 2015. [pdf]

[J6]. Grace X. Gao, Holmer Denks, Achim Steingassnd, Michael Meurer, Todd Walter and Per Enge, DME Interference Mitigation Based on Flight Test Data Over European Hot Spot, GPS Solutions, vol. 17, issue 1, January 2013. [pdf]

[J5]. Grace X. Gao and Per Enge, How Many GNSS Satellites Are Too Many? IEEE Transactions on Aerospace and Electronic Systems, vol. 48, no. 4, pp. 2865-2874, October 2012. [pdf]

[J4]. Liang Heng, Grace X. Gao, Todd Walter and Per Enge, GPS Signal-in-Space Integrity Performance Evolution in the Last Decade, IEEE Transactions on Aerospace and Electronic Systems, vol. 48, no. 4, pp. 2932-2946, October 2012. [pdf]

[J3]. Patrick Henkel, Grace X. Gao, Todd Walter and Christoph Gunther, Robust Multi-Carrier, Multi-Satellite Vector Phase Locked Loop with Wideband Ionospheric Correction and Integrated Weighted RAIM, Journal of Italian Institute of Navigation, issue 190, December 2009. [pdf]

[J2]. Grace X. Gao, Alan Chen, Sherman Lo, David De Lorenzo and Per Enge, Compass-M1 Broadcast Codes in E2, E5b and E6 Frequency Bands, IEEE Journal of Selected Topics in Signal Processing, Special Issue on Advanced Signal Processing for GNSS and Robust Navigation, vol. 3, no. 4, pp. 599-612, Aug. 2009. [pdf]

[J1]. Zhe Xiang, Song Song, Jin Chen, Hao Wang, Jian Huang and Grace X. Gao, A Wireless LAN-based Indoor Positioning Technology, IBM Journal of Research and Development, vol. 48, no. 5, September-November 2004. [pdf]

Books and Theses

[B2]. Lance Davis, Per Enge and Grace X. Gao, Global Navigation Satellite Systems: Report of a Joint Workshop of the National Academy of Engineering and the Chinese Academy of Engineering, the National Academies Press, ISBN 13: 978-0-309-22275-4, 2012. [pdf]

[B1]. Grace X. Gao, Ph.D. Thesis, Towards Navigation based on 120 Satellites - Analyzing the New Signals, 2008. [pdf]

Magazine Articles

[M16]. Akshay Shetty and Grace X. Gao, GPS-lidar Fusion with 3D City Models, GPS World Magazine, September 2017. Cover Story. [pdf]

[M15]. Yuting Ng and Grace X. Gao, Position Estimation Using Non-Line-of-Sight GPS signals, GPS World Magazine, March 2017. [pdf]

[M14]. Sriramya Bhamidipati, Yuting Ng and Grace X. Gao, Multi-Receiver GPS-Based Direct Time Estimation for PMUs, Inside GNSS Magazine, January-February 2017. Cover Story. [pdf]

[M13]. Liang Heng, Athindran Ramesh Kumar and Grace X. Gao, GPS Confidential: Enabling Proximity Detection While Preserving Location Privacy, Inside GNSS Magazine, September-October 2015. [pdf]

[M12]. Eliot Wycoff, Yuting Ng and Grace X. Gao, Python GNSS Receiver: An Object-Oriented Software Platform Suitable for Multiple Receivers, GPS World Magazine, Feburary 2015. [pdf]

[M11]. Liang Heng, Daniel Chou and Grace X. Gao, Reliable GPS-Based Timing for Power Systems: A Multi-Layered, Multi-Receiver Architecture, Inside GNSS Magazine, November-December 2014. [pdf]

[M10]. Liang Heng, Daniel B. Work and Grace X. Gao, Reliability from Unreliable Peers: Cooperative GNSS Authentication, Inside GNSS Magazine, September–October 2013. [pdf]

[M9]. Sam Pullen and Grace X. Gao, GNSS Jamming in the Name of Privacy: Potential Threat to GPS Aviation, Inside GNSS Magazine, March-April 2012. [pdf]

[M8]. Liang Heng, Grace X. Gao, Todd Walter and Per Enge, Digging into GPS integrity: Charting the evolution of signal-in-space performance by data mining 400,000,000 navigation messages, GPS World, vol. 22, no. 11, pp. 44–49, Nov 2011. [pdf]

[M7]. Grace X. Gao, Liang Heng, Todd Walter and Per Enge, Breaking the Ice: Navigation in the Arctic, Inside GNSS Magazine, September-October 2011. [pdf]

[M6]. R. Eric Phelts, Grace X. Gao, Gabriel Wong, Liang Heng, Todd Walter, Per Enge, Stefan Erker, Steffen Thoelert and Michael Meurer, Aviation Grade, New GPS Signals Chips Off the Block IIF, Inside GNSS Magazine, July-August 2010. [pdf]

[M5]. Steffen Thoelert, Steffen Erker, Michael Meurer, Liang Heng, Eric Phelts, Grace X. Gao, Gabriel Wong, Todd Walter and Per Enge, On the Air, New Signals from the First GPS IIF Satellite, Inside GNSS Magazine, July-August 2010. Cover Story. [pdf]

[M4]. Grace X. Gao, Liang Heng, David De Lorenzo, Sherman Lo, Dennis Akos, Alan Chen, Todd Walter, Per Enge and Bradford Parkinson, Modernization Milestone: Observing the First GPS Satellite with an L5 Payload, Inside GNSS Magazine, May-June 2009. [pdf]

[M3]. Grace X. Gao, Dennis Akos, Todd Walter and Per Enge, GIOVE-B on the Air: Understanding Galileo's New Signals, Inside GNSS Magazine, May-June 2008. [pdf]

[M2]. Grace X. Gao, Alan Chen, Sherman Lo, David De Lorenzo and Per Enge, GNSS over China: the Compass MEO Satellite Codes, Inside GNSS Magazine, July-August 2007. Cover Story. [pdf]

[M1]. Sherman Lo, Alan Chen, Per Enge, Grace X. Gao, Dennis Akos, Jean-Luc Issler, Lionel Ries, Thomas Grelier and Joel Dantepal, GNSS Album: Images and Spectral Signatures of the New GNSS Signals, Inside GNSS Magazine, May-June 2006. Cover Story. [pdf]

Conference Papers

[C64]. Siddharth Tanwar and Grace X. Gao, Decentralised Collaborative Localization for Quadrotor UAV Swarms, Proceedings of the IEEE/ION PLANS conference, Monterey, CA, Apr 2018. Submitted.

[C63]. Arthur Chu and Grace X. Gao, Integrity Monitoring with Direct Positioning for Vertical Protection Level Derivation, Proceedings of the IEEE/ION PLANS conference, Monterey, CA, Apr 2018. Submitted.

[C62]. Sriramya Bhamidipati and Grace X. Gao, GNSS Covariance Estimation using Multivariate Time Series-based Convolutional Neural Network, Proceedings of the IEEE/ION PLANS conference, Monterey, CA, Apr 2018. Submitted.

[C61]. Sriramya Bhamidipati and Grace X. Gao, Simultaneous Localization of Multiple Jammers and Multiple Vehicles Using Graphical Framework and Probability Hypothesis Density, Proceedings of the IEEE/ION PLANS conference, Monterey, CA, Apr 2018. Submitted.

[C60]. Tara Mina and Grace X. Gao, Centralized Detection of GPS Timing Manipulations for Power Systems, Proceedings of the IEEE/ION PLANS conference, Monterey, CA, Apr 2018. Submitted.

[C59]. Sriramya Bhamidipati and Grace X. Gao, GPS Spoofer Localization for PMUs using Multi-Receiver Direct Time Estimation, in Proceedings of the Institute of Navigation GNSS+ conference (ION GNSS+ 2017), Portland OR, Sep 2017, Best Presentation of the Session Award. [pdf]

[C58]. Akshay Shetty and Grace X. Gao, Covariance Estimation for GPS-LiDAR Sensor Fusion for UAVs, in Proceedings of the Institute of Navigation GNSS+ conference (ION GNSS+ 2017), Portland OR, Sep 2017. [pdf]

[C57]. Arthur Chu and Grace X. Gao, Multi-Receiver Direct Position Estimation Tested on a Full-Scale Fixed-wing Aircraft, in Proceedings of the Institute of Navigation GNSS+ conference (ION GNSS+ 2017), Portland OR, Sep 2017. [pdf]

[C56]. Shubhendra Chauhan and Grace X. Gao, Joint GPS Direct Positioning and Vision Estimation Using an Adaptive Filter, in Proceedings of the Institute of Navigation GNSS+ conference (ION GNSS+ 2017), Portland OR, Sep 2017. [pdf]

[C55]. Cara Kataria and Grace X. Gao, A Single Hemispiral Antenna for GNSS Interference Mitigation and Direction Estimation, in Proceedings of the Institute of Navigation GNSS+ conference (ION GNSS+ 2017), Portland OR, Sep 2017. [pdf]

[C54]. Sriramya Bhamidipati, Yuting Ng and Grace X. Gao, Multi-Receiver GPS-based Direct Time Estimation for PMUs, in Proceedings of the Institute of Navigation GNSS+ conference (ION GNSS+ 2016), Portland OR, Sep 2016, Best Presentation of the Session Award. [pdf]

[C53]. Yuting Ng and Grace X. Gao, Direct Position Estimation Utilizing Non-Line-of-Sight (NLOS) GPS Signals, in Proceedings of the Institute of Navigation GNSS+ conference (ION GNSS+ 2016), Portland OR, Sep 2016. [pdf]

[C52].Yuting Ng and Grace X. Gao, Computationally Efficient Direct Position Estimation via Low Duty-Cycling, in Proceedings of the Institute of Navigation GNSS+ conference (ION GNSS+ 2016), Portland OR, Sep 2016. [pdf]

[C51]. Enyu Luo, Xin Hui Fang, Yuting Ng and Grace X. Gao, Shinerbot: Bio-inspired Collective Robot Swarm Navigation Platform, in Proceedings of the Institute of Navigation GNSS+ conference (ION GNSS+ 2016), Portland OR, Sep 2016. [pdf]

[C50]. Yuting Ng and Grace X. Gao, Mitigating Jamming and Meaconing Attacks Using Direct GPS Positioning, in Proceedings of the IEEE/ION PLANS conference, Savanah GA, Apr 2016, Best Paper Award. [pdf]

[C49]. Yuting Ng and Grace X. Gao, Joint GPS and Vision Direct Position Estimation, in Proceedings of the IEEE/ION PLANS conference, Savanah GA, Apr 2016. [pdf]

[C48]. Yuting Ng and Grace X. Gao, Robust GPS-Based Direct Time Estimation for PMUs, in Proceedings of the IEEE/ION PLANS conference, Savanah GA, Apr 2016. [pdf]

[C47]. Yuting Ng and Grace X. Gao, Advanced Multi-Receiver Position-Information-Aided Vector Tracking for Robust GPS Time Transfer to PMUs, in Proceedings of the Institute of Navigation GNSS+ conference (ION GNSS+ 2015), Tampa FL, Sep 2015, Best Paper of the Session Award. [pdf]

[C46 ]. Yuting Ng and Grace X. Gao, Advanced Multi-Receiver Vector Tracking for Positioning a Land Vehicle, in Proceedings of the Institute of Navigation GNSS+ conference (ION GNSS+ 2015), Tampa FL, Sep 2015. [pdf]

[C45]. Akshay Shetty and Grace X. Gao, Vision-Aided Measurement Level Integration of Multiple GPS Receivers for UAVs, in Proceedings of the Institute of Navigation GNSS+ conference (ION GNSS+ 2015), Tampa FL, Sep 2015. [pdf]

[C44]. Derek Chen and Grace X. Gao, Robust MAV State Estimation Using an M-Estimator Augmented Sensor Fusion Graphs, in Proceedings of the Institute of Navigation GNSS+ conference (ION GNSS+ 2015), Tampa FL, Sep 2015. [pdf]

[C43]. Akshay Shetty and Grace X. Gao, Measurement Level Integration of Multiple Low-Cost GPS Receivers for UAVs, ION International Technical Meeting 2015, Dana Point, California, January 2015. [pdf]

[C42]. Derek Chen and Grace X. Gao, Simultaneous State Estimation of UAV Trajectory Using Probabilistic Graph Models, ION International Technical Meeting 2015, Dana Point, California, January 2015. [pdf]

[C41]. Daniel Chou, Yuting Ng and Grace X. Gao, Robust GPS-Based Timing for PMUs Based on Multi-Receiver Position-Information-Aided Vector Tracking, ION International Technical Meeting 2015, Dana Point, California, January 2015. [pdf]

[C40]. Yuting Ng and Grace X. Gao, Multi-Receiver Vector Tracking Based on a Python Platform, ION International Technical Meeting 2015, Dana Point, California, January 2015. [pdf]

[C39]. Liang Heng, Daniel Chou and Grace X. Gao, Cooperative GPS Signal Authentication from Unreliable Peers, in Proceedings of the Institute of Navigation GNSS+ conference (ION GNSS+ 2014), Tampa FL, Sep 2014, Best Presentation of the Session Award. [pdf]

[C38]. Athindran Ramesh Kumar, Liang Heng and Grace X. Gao , GPS Privacy: Enabling Proximity-based Services While Keeping GPS Locations Private, in Proceedings of the Institute of Navigation GNSS+ conference (ION GNSS+ 2014), Tampa FL, Sep 2014. [pdf]

[C37]. Daniel Chou, Liang Heng and Grace X. Gao, Robust GPS-Based Timing for Phasor Measurement Units: A Position-Information-Aided Vector Tracking Approach, in Proceedings of the Institute of Navigation GNSS+ conference (ION GNSS+ 2014), Tampa FL, Sep 2014, Best Presentation of the Session Award. [pdf]

[C36]. Eliot Wycoff and Grace X. Gao , A Python Software Platform for Cooperatively Tracking Multiple GPS Receivers, in Proceedings of the Institute of Navigation GNSS+ conference (ION GNSS+ 2014), Tampa FL, Sep 2014. [pdf]

[C35]. Liang Heng and Grace X. Gao, Navigating Robot Swarms Using Collective Intelligence Learned from Golden Shiner Fish, in Proceedings of the Collective Intelligence Conference (CI2014), Cambridge, MA, Jun 2014. [pdf]

[C34]. Liang Heng, Jonathan Makela, Alejandro Dominguez-Garcia, Rakesh Bobba, William Sanders and Grace X. Gao, Reliable GPS-based Timing for Power System Applications: A Multi-Layered Multi-Receiver Approach, in Proceedings of the 2014 IEEE Power and Energy Conference at Illinois (IEEE PECI 2014), Champaign, IL, Feb 2014. [pdf]

[C33]. Liang Heng and Grace X. Gao, Accuracy of Range-Based Localization Schemes in Random Sensor Networks: A Lower Bound Analysis, in Proceedings of the IEEE/RSJ International Conference on Intelligent Robots and Systems (IEEE/RSJ IROS 2013), Tokyo, Japan, Nov 2013. [pdf]

[C32]. Derek Chen, Liang Heng, Dan Jia and Grace X. Gao, Distributed Array of GPS Receivers for 3D Wind Profile Determination in Wind Farms, in Proceedings of the Institute of Navigation GNSS+ conference (ION GNSS+ 2013), Nashville, TN, Sep 2013, Best Presentation of the Session Award. [pdf]

[C31]. Liang Heng and Grace X. Gao, Networked GPS Approach to Tracking Marine Animal Schools, in Proceedings of the Institute of Navigation GNSS+ conference (ION GNSS+ 2013), Nashville, TN, Sep 2013. [pdf]

[C30]. Liang Heng, Todd Walter, Per Enge and Grace X. Gao, Overcoming RFI with High Mask Angle Antennas and Multiple GNSS Constellations, in Proceedings of the Institute of Navigation GNSS+ conference (ION GNSS+ 2013), Nashville, TN, Sep 2013. [pdf]

[C29]. Grace X. Gao, Kaz Gunning, Todd Walter and Per Enge, Mitigating Personal Privacy Device Interference for Aviation Users, in Proceedings of the 25th International Technical Meeting of the Satellite Division of the Institute of Navigation (ION GNSS 2012), Nashville, TN, Sep 2012. [pdf]

[C28]. Liang Heng, Grace X. Gao, Todd Walter and Per Enge, GLONASS signal-in-space anomalies since 2009, in Proceedings of the 25th International Technical Meeting of the Satellite Division of the Institute of Navigation (ION GNSS 2012), Nashville, TN, Sep 2012, Best Presentation of the Session Award. [pdf]

[C27]. Liang Heng, Grace X. Gao, Todd Walter and Per Enge, Automated Verification of Potential GPS Signal-In-Space Anomalies Using Ground Observation Data, in Proceedings of the IEEE/ION PLANS conference, Myrtle Beach, SC, Apr 2012. [pdf]

[C26]. Sam Pullen, Grace X. Gao, Carmen Tedeschi and John Warburton, The Impact of Uninformed RF Interference on GBAS and Potential Mitigations, ION International Technical Meeting 2012, Newport Beach, California, January 2012. [pdf]

[C25]. Liang Heng, Grace X. Gao, Todd Walter and Per Enge, Statistical Characterization of GLONASS Broadcast Clock Errors and Signal-In-Space Errors, ION International Technical Meeting 2012, Newport Beach, California, January 2012. [pdf]

[C24]. Grace X. Gao, Liang Heng, Todd Walter and Per Enge, Breaking the Ice: Navigating in the Arctic, ION Global Navigation Satellite Systems Conference 2011, Portland, Oregon, September 2011. Best Presentation of the Session Award. [pdf]

[C23]. Liang Heng, Grace X. Gao, Todd Walter and Per Enge, Statistical Characterization of GLONASS Signal-In-Space Errors, ION Global Navigation Satellite Systems Conference 2011, Portland, Oregon, September 2011. [pdf]

[C22]. Myungjun Choi, Juan Blanch, Dennis Akos, Liang Heng, Grace X. Gao, Todd Walter and Per Enge, Demonstrations of Multi-Constellation Advanced RAIM for Vertical Guidance using GPS and GLONASS Signals, ION Global Navigation Satellite Systems Conference 2011, Portland, Oregon, September 2011. [pdf]

[C21]. Stefan Erker, Steffen Thoelert, Johann Furthner, Michael Meurer, Grace X. Gao, Liang Heng, Todd Walter and Per Enge, GLONASS K First in Orbit Signal in Space Analysis of Russian New Satellite Generation, ION Global Navigation Satellite Systems Conference 2011, Portland, Oregon, September 2011. [pdf]

[C20]. Liang Heng, Grace X. Gao, Todd Walter and Per Enge, Statistical Characterization of GPS Signal-In-Space Errors, ION International Technical Meeting 2011, San Diego, California, January 2011.[pdf]

[C19]. Patryk Jurkowski, Patrick Henkel, Grace X. Gao and Christoph Gunther, Integer ambiguity resolution with tight and soft baseline constraints for freight stabilization at helicopters and cranes, ION National Technical Meeting 2011, San Diego, California, January 2011. [pdf]

[C18]. David Varodayan and Grace X. Gao, Redundant Metering for Integrity with Information-Theoretic Confidentiality, Proc. IEEE International Conference on Smart Grid Communications, SGC 2010, Gaithersburg, Maryland, October 2010. [pdf]

[C17]. Grace X. Gao, Liang Heng, Gabriel Wong, Eric Phelts, Juan Blanch, Todd Walter, Per Enge, Stefan Erker, Steffen Thoelert and Michael Meurer, GPS in Mid-life with an International Team of Doctors, Analyzing IIF-1 Satellite Performance and Backward- Compatibility, ION Global Navigation Satellite Systems Conference 2010, Portland, Oregon, September 2010. Best Presentation of the Session Award. [pdf]

[C16]. Liang Heng, Grace X. Gao, Todd Walter and Per Enge, GPS Signal-in-Space Anomalies in the Last Decade, Data Mining of 400,000,000 GPS Navigation Message, ION Global Navigation Satellite Systems Conference 2010, Portland, Oregon, September 2010. [pdf]

[C15]. Grace X. Gao, Haochen Tang, Juan Blanch, Jiyun Lee, Todd Walter and Per Enge, Methodology and Case Studies of Signal-in-Space Error Calculation Top-down Meets Bottom-up, ION Global Navigation Satellite Systems Conference 2009, Savannah, Georgia, September 2009. [pdf]

[C14]. Patrick Henkel, Grace X. Gao, Todd Walter and Christoph Gunther, Robust Multi-Carrier, Multi-Satellite Vector Phase Locked Loop with Wideband Ionospheric Correction and Integrated Weighted RAIM, ENC Global Navigation Satellite Systems Conference 2009, Naples, Italy, May 2009. [pdf]

[C13]. Grace X. Gao, Dennis Akos, Todd Walter and Per Enge, Understanding the GIOVE-B Broadcast Codes of the Galileo System, IEEE Asilomar Conference on Signals, Systems and Computers, Pacific Grove, California, October 2008. [pdf]

[C12]. Shankar Ramakrishnan, Grace X. Gao, David De Lorenzo, Todd Walter, Per Enge and Dennis Akos, Design and Analysis of Reconfigurable Embeded GNSS Receivers Using Model-Based Design Tools, ION Global Navigation Satellite Systems Conference 2008, Savannah, Georgia, September 2008. Best Presentation of the Session Award. [pdf]

[C11]. Grace X. Gao, Alan Chen, Sherman Lo, David De Lorenzo and Per Enge, Compass-M1 Broadcast Codes and their Application to Acquisition and Tracking, ION National Technical Meeting 2008, San Diego, California, January 2008. [pdf]

[C10]. Grace X. Gao, DMETACAN Interference and its Mitigation in L5E5 Bands, ION Global Navigation Satellite Systems Conference 2007, Fort Worth, Texas, September 2007. Best Presentation of the Session Award and Student Paper Award. [pdf]

[C9]. Grace X. Gao, David De Lorenzo, Todd Walter and Per Enge, Acquisition and Tracking of GIOVE-A Broadcast L1E5E6 Signals and Analysis of DMETACAN Interference on Receiver Design, ENC Global Navigation Satellite Systems Conference 2007,/ Geneva, Switzerland, May 2007. [pdf]

[C8]. Grace X. Gao, Seebany Datta-Barua, Todd Walter and Per Enge, Ionosphere Effects for Wideband GNSS Signals, ION Annual Meeting 2007, Cambridge, Massachusetts, April 2007. [pdf]

[C7]. Grace X. Gao, David De Lorenzo, Alan Chen, Sherman Lo, Dennis Akos, Todd Walter and Per Enge, Galileo GIOVE-A Broadcast E5 Codes and their Application to Acquisition and Tracking, ION National Technical Meeting 2007, San Diego, California, January 2007. [pdf]

[C6]. Grace X. Gao, Jim Spilker Jr., Todd Walter, Per Enge and Anthony Pratt, Code Generation Scheme and Property Analysis of Broadcast Galileo L1 and E6 Signals, ION Global Navigation Satellite Systems Conference 2006, Fort Worth, Texas, September 2006. [pdf]

[C5]. Grace X. Gao, Zhe Xiang, Hao Wang, Jun Shen, Jian Huang and Song Song, An Approach to Security and Privacy of RFID System for Supply Chain, IEEE International Conference on e-Commerce Technology for Dynamic e-Business 2004, Beijing, China, September 2004.

[C4]. Grace X. Gao, Richard Yao and Zhenming Feng, Hadamard Coded Multi-band UWB, IEEE Semiannual Vehicular Technology Conference (VTC) 2003, Orlando, Florida, October 2003.

[C3]. Richard Yao, Grace X. Gao, Zhengqi Chen and Wenwu Zhu, UWB Multipath Channel Model Based on Time-Domain UTD Technique, IEEE Global Communications Conference GLOBECOM 2003, San Francisco, California, December 2003.

[C2]. Grace X. Gao, Lu Mingquan and Feng Zhenming, Asymmetric Hexagonal QAM Based OFDM System, IEEE International Conference on Communications, Circuits and Systems and West Sino Expositions 2002, Xi'an, China, June 2002.

[C1]. Grace X. Gao, Lu Mingquan and Feng Zhenming, Optimal Wavelet Packet Based Multicarrier Modulation over Multipath Wireless Channels, IEEE International Conference on Communications, Circuits and Systems and West Sino Expositions 2002, Xi'an, China, June 2002.

Patents

[P2]. Grace X. Gao and David Varodayan, Method and Apparatus for Processing Signals, United States Patent 12/912,878.

[P1]. Hao Wang, Rongyao Fu, Song Song, Grace X. Gao, Zhe Xiang and Jian Huang, Apparatus and Method for Detecting Asset Position, United States Patent 200707309.