Phase Synchronization Errors on Near-Space Passive Bistatic Radar Imaging

Near-space passive bistatic radar involves a passive receiver placed inside a near-space platform is in conjunction with one opportunistic illuminator. This spatial configuration has many operational advantages such as improved capability, reliability, and flexibility. However, high-precision phase synchronization must be ensured. So accurate simulation of phase synchronization errors is of great importance during designing and developing of near-space passive bistatic radar systems. This paper concentrates on the prediction of phase synchronization errors due to limited oscillator frequency stability between opportunistic illuminator and passive receiver. With statistical models of phase noise, an analytical expression of phase synchronization errors is derived and some simulations are performed. Moreover, the impact of phase synchronization errors on bistatic radar imaging performance is investigated. Simulation results show that phase synchronization errors may degrade the imaging performance greatly and some synchronization compensation techniques should be developed. Hence, some possible solutions are investigated.

[1]  Wen-Qin Wang.  Application of Near-Space Passive Radar for Homeland Security , 2007 .

[2]  V. F. Kroupa.  Low-noise microwave-frequency synthesisers Design principles , 1983 .

[3]  Donald G. Meyer,et al.  A Test Set for the Accurate Measurement of Phase Noise on High-Quality Signal Sources , 1970 .

[4]  Venceslav F. Kroupa,et al.  Jitter and phase noise in frequency dividers , 2001, IEEE Trans. Instrum. Meas..

[5]  Neil Genzlinger.  A. and Q , 2006 .

[6]  M. M. Driscoll,et al.  Spectral performance of frequency multipliers and dividers , 1992, Proceedings of the 1992 IEEE Frequency Control Symposium.

[7]  W. Q. Wang,et al.  Extracting phase noise of microwave and millimetre-wave signals by deconvolution , 2006 .

[8]  Ed Mel Tomme,et al.  Balloons in Today's Military? an Introduction to the Near-Space Concept , 2005 .

[9]  V. Kroupa,et al.  Noise Properties of PLL Systems , 1982, IEEE Trans. Commun..

[10]  Wen-Qin Wang.  ANALYTICAL MODELING AND SIMULATION OF PHASE NOISE IN BISTATIC SYNTHETIC APERTURE RADAR SYSTEMS , 2006 .

[11]  Dimitris G. Manolakis,et al.  Statistical and Adaptive Signal Processing: Spectral Estimation, Signal Modeling, Adaptive Filtering and Array Processing , 1999 .

[12]  Chibiao Ding,et al.  Time and phase synchronisation via direct-path signal for bistatic synthetic aperture radar systems , 2008 .

[13]  Wenqin Wang,et al.  Approach of Adaptive Synchronization for Bistatic SAR Real-Time Imaging , 2007, IEEE Transactions on Geoscience and Remote Sensing.

[14]  Venceslav F. Kroupa,et al.  Direct digital frequency synthesizers , 1998 .