Joshua N. Ash Postdoctoral Researcher in Electrical and Computer Engineering Campus Address: 717 Dreese Laboratory 2015 Neil Avenue Columbus, OH  43210 USA

Publications

Journal:

[1] Acoustic time delay estimation and sensor network self-localization: Experimental results, Joshua N. Ash and Randolph L. Moses, Journal of the Acoustical Society of America, vol. 118, no. 2, pp. 841–850, 2005. [pdf] [bibtex] 

[2] Locating the nodes: cooperative localization in wireless sensor networks, Neal Patwari, Joshua N. Ash, Spyros Kyperountas, Alfred O. Hero III, Randolph L. Moses, and Neiyer S. Correal, IEEE Signal Processing Magazine, vol. 22, no. 4, pp. 54–69, July 2005.  [pdf] [bibtex] [software]

[3] On the relative and absolute positioning errors in self-localization systems, Joshua N. Ash and Randolph L. Moses,  IEEE Trans. Signal Processing, vol. 56, no. 11, pp. 5668–5679, 2008. [pdf] [bibtex]

[4] Self-calibration of sensor networks, Joshua Ash and Randolph Moses, in Handbook on Array Processing and Sensor Networks, S. Haykin and K.J.R. Liu, Eds. IEEE-Wiley, 2009. [pdf *]

[5] Model-based deconvolution of bacterial cell cycle time-series data reveals gene expression details at high resolution, Dan Siegal-Gaskins, Joshua Ash, and Sean Crosson, PLoS Computational Biology,  vol. 5,  no. 2,  Aug. 2009 [pdf]

[6] An autoregressive formulation for SAR backprojection imaging, Randolph L. Moses and Joshua N. Ash, IEEE Trans. on Aerospace & Elect. Sys., 2009, (in submission). [pdf]

[7] On the relation between sparse reconstruction and parameter estimation with model order selection, Christian Austin, Randolph Moses, Joshua Ash, and Emre Ertin, IEEE Journal of Selected Topics in Signal Processing, 2009 (in submission) [pdf *]

[8] Optimal anchor selection and placement strategies for absolute sensor localization, Joshua Ash and Randolph Moses, ACM Trans. on Sensor Networks, 2009, (in preparation).

[9] Geometry of the constrained Cramer-Rao bound, Joshua N. Ash, IEEE Sig. Proc. Letters, 2009, (in preparation).

[10] Acoustic sensor network self-localization: Experimental results, Joshua N. Ash and Randolph L. Moses, 2003 Military Sensing Symposia (MSS) Specialty Group on Battlefield Acoustic and Seismic Sensing, Magnetic and Electric Field Sensors, Laurel, MD, Oct. 2003. [pdf] [bibtex]

[11] Position and orientation for distributed sensors: the PODIS network,Jason Wilden, Jim Agniel, Randolph L. Moses, and Joshua N. Ash, Proceedings of the 2004 MSS Battlefield Acoustics Symposium, Aug. 2004. [bibtex]

[12] Sensor network localization via received signal strength measurements with directional antennas, Joshua Ash and Lee Potter, Proc. 42nd Annual Allerton Conference on Communication, Control, and Computing, pp. 1861–1870, Sept. 2004. [pdf] [bibtex]

[13] Outlier compensation in sensor network self-localization via the EM algorithm, Joshua N. Ash and Randolph L. Moses, IEEE International Conference on Acoustics, Speech, and Signal Processing, pp. 749–752, March 19–23 2005. [pdf] [bibtex]

[14] Relative and absolute errors in sensor network localization, Joshua N. Ash and Randolph L. Moses, IEEE International Conference on Acoustics, Speech, and Signal Processing, pp. 1033–1036, April 15–20 2007. [pdf]

[15] Robust system multiangulation using subspace methods, Joshua N. Ash and Lee C. Potter, Proc. Information Processing in Sensor Networks, April 2007, pp. 61–68, (22% acceptance). [pdf]

[16] Sensor localization error decomposition: Theory and applications, Joshua N. Ash and Randolph L. Moses, Proc. IEEE Statistical Signal Processing Workshop, Aug.2007, pp. 660–664, (invited). [pdf]

[17] On optimal anchor node placement in sensor localization by optimization of subspace principal angles, Joshua N. Ash and Randolph L. Moses, Proc. IEEE International Conference on Acoustics, Speech, and Signal Processing, pp. 2289–2292, Mar. 30–Apr. 4 2008. [pdf]

[18] Recursive SAR imaging, R. L. Moses and J. N. Ash, Algorithms for Synthetic Aperture Radar Imagery XV, SPIE Defense and Security Symposium, vol. 6970, March 2008.  [pdf]

[19] SAR focusing performance for moving objects with random motion components, Ahmed Fasih, Emre Ertin, Joshua Ash, and Randolph Moses, Proc. Asilomar Conference on Signals, Systems, and Computers, Oct. 2008, Pacific Grove, CA. [pdf]

[20] On the relation between sparse sampling and parametric estimation, Christian Austin, Emre Ertin, Joshua Ash, and Randolph Moses, Proc. IEEE DSP Workshop, Jan. 2009, Marco Island, FL. [pdf]

[21] Time-delay estimation in a time-warping environment, Joshua Ash and Randolph Moses, Unattended Ground, Sea, and Air Sensor Tech. and App. XI, SPIE Defense and Security Symposium, 2009. [pdf]

[22] Performance of shockwave-based shooter localization under model misspecification, Joshua Ash, Gene Whipps, and Richard Kozick, IEEE International Conference on Acoustics, Speech, and Signal Processing, 2010, (in submission). [pdf*] 

ECE309 Electrical Circuits Laboratory, Instructor, Winter 2003

SeNeLEx, Sensor Network Localization Explorer (matlab code)

Online localization demonstration with Google Maps