Statistical angular resolution limit for array radar with ultrawideband stochastic signals

2014 ◽  
Author(s):  
Xiaoli Zhou ◽  
Hongqiang Wang ◽  
Yongqiang Cheng ◽  
Yuliang Qin ◽  
Haowen Chen ◽  
...  
Keyword(s):  
Angular Resolution ◽  
Resolution Limit ◽  
Stochastic Signals

scholarly journals Statistical Angular Resolution Limit for Ultrawideband MIMO Noise Radar

2015 ◽  
Vol 2015 ◽  
pp. 1-12
Author(s):  
Xiaoli Zhou ◽  
Hongqiang Wang ◽  
Yongqiang Cheng ◽  
Yuliang Qin ◽  
Haowen Chen
Keyword(s):  
Angular Resolution ◽  
Signal To Noise Ratio ◽  
Mimo Radar ◽  
Optimization Criterion ◽  
Ratio Test ◽  
Theoretic Approach ◽  
Resolution Limit ◽  
Factors Affecting ◽  
Noise Radar ◽  
The Relationship

The two-dimensional angular resolution limit (ARL) of elevation and azimuth for MIMO radar with ultrawideband (UWB) noise waveforms is investigated using statistical resolution theory. First, the signal model of monostatic UWB MIMO noise radar is established in a 3D reference frame. Then, the statistical angular resolution limits (SARLs) of two closely spaced targets are derived using the detection-theoretic and estimation-theoretic approaches, respectively. The detection-theoretic approach is based on the generalized likelihood ratio test (GLRT) with given probabilities of false alarm and detection, while the estimation-theoretic approach is based on Smith’s criterion which involves the Cramér-Rao lower bound (CRLB). Furthermore, the relationship between the two approaches is presented, and the factors affecting the SARL, that is, detection parameters, transmit waveforms, array geometry, signal-to-noise ratio (SNR), and parameters of target (i.e., radar cross section (RCS) and direction), are analyzed. Compared with the conventional radar resolution theory defined by the ambiguity function, the SARL reflects the practical resolution ability of radar and can provide an optimization criterion for radar system design.

scholarly journals Coexistence of Near-Field and Far-Field Sources: the Angular Resolution Limit

2013 ◽  
Vol 464 ◽  
pp. 012002
Author(s):  
Rémy Boyer ◽  
Mohammed Nabil El Korso ◽  
Alexandre Renaux ◽  
Sylvie Marcos
Keyword(s):  
Angular Resolution ◽  
Near Field ◽  
Far Field ◽  
Resolution Limit

scholarly journals Galactic HI Mapping and Optical–IR Studies

1997 ◽  
Vol 14 (1) ◽  
pp. 118-119
Author(s):  
R. D. Davies
Keyword(s):  
Interstellar Medium ◽  
Angular Resolution ◽  
Scale Structure ◽  
Resolution Limit ◽  
Ir Studies ◽  
Scale Down

AbstractHI structure is seen at every scale down to the angular resolution limit of all survey telescopes. I present several examples of the structures at high Galactic latitudes with the 12 arcmin beam of the Loveli Telescope, the 2 arcmin resolution of the DRAO synthesis, as well as other indicators of finer scale structure in the interstellar medium (ISM).

On the Angular Resolution Limit for Array Processing in the Presence of Modeling Errors

2013 ◽  
Vol 61 (19) ◽  
pp. 4701-4706 ◽  
Author(s):  
Nguyen Duy Tran ◽  
Remy Boyer ◽  
Sylvie Marcos ◽  
Pascal Larzabal
Keyword(s):  
Angular Resolution ◽  
Array Processing ◽  
Resolution Limit ◽  
Modeling Errors
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