Effects of System Impairments on the Performance of Distributed STAP

In this paper, we study the effect of phase noise and other impairments on space-time adaptive processing. Performance of distributed space-time adaptive processing (STAP) with respect to system aspects and impairments specific to a coherent distributed system is also analyzed. The combined effects on STAP performance stemming from the distributed architecture: frequency offsets, generalized motion, sparse aperture, and sensor location errors, were also analyzed. Simulation results illustrate the effect of individual impairment and combined errors on degrading the performance of target detection.

[1]  Augusto Aubry,et al.  Radar phase noise modeling and effects-part II: pulse doppler processors and sidelobe blankers , 2016, IEEE Transactions on Aerospace and Electronic Systems.

[2]  D.W. Allan,et al.  Measurements of frequency stability , 1986, Proceedings of the IEEE.

[3]  James Ward,et al.  Space-time adaptive processing for airborne radar , 1998 .

[4]  J. Timmer,et al.  On generating power law noise. , 1995 .

[5]  B. Steinberg The peak sidelobe of the phased array having randomly located elements , 1972 .

[6]  D. Leeson A simple model of feedback oscillator noise spectrum , 1966 .

[7]  Alexander M. Haimovich,et al.  Design of CFAR radars using compressive sensing , 2016, 2016 IEEE Radar Conference (RadarConf).

[8]  Gerhard Krieger,et al.  Impact of oscillator noise in bistatic and multistatic SAR , 2005, Proceedings. 2005 IEEE International Geoscience and Remote Sensing Symposium, 2005. IGARSS '05..

[9]  Neil Ashby Confidence Estimates in Simulation of Phase Noise or Spectral Density , 2017, IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control.

[10]  Wolfgang Rave,et al.  Effects of Phase Noise on OFDM Systems With and Without PLL: Characterization and Compensation , 2007, IEEE Transactions on Communications.

[11]  D. B. Leeson Oscillator phase noise: A 50-year retrospective , 2015, 2015 Joint Conference of the IEEE International Frequency Control Symposium & the European Frequency and Time Forum.

[12]  E. Panula-Ontto,et al.  Oscillator Noise and SAR Image Quality. , 1994 .

[13]  D. W. Allan,et al.  Statistics of atomic frequency standards , 1966 .

[14]  Mike Brookes,et al.  A Spectral Model for RF Oscillators With Power-Law Phase Noise , 2006, IEEE Transactions on Circuits and Systems I: Regular Papers.

[15]  R. Klemm Principles of Space-Time Adaptive Processing , 2002 .

[16]  I. Introductiok,et al.  A Mathematical Theory of Antenna Arrays with Randomly Spaced Elements , 1963 .

[17]  Kristine L. Bell,et al.  Array self calibration with large sensor position errors , 1999 .