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All figures (15)
Fig. 4 Simulation of estimating cross-talk c amplitude (|f | = 1.5, arg{f} = /3, |1| = |2 |=0.1, arg{1}= arg{2}= arg{c}=0, = /4)
Fig. 5 Simulation of estimating cross-talk c phase (|f | = 1.5, arg{f} = /3, |1| = |2 |= 0.1, |c| =0.32, arg{1}= arg{2}= 0, = /4)
Fig. 3 Simulation of channel phase imbalance estimation (|f | = 1.5, |1| = |2 |= 0.1, |c| =0.32, arg{1}= arg{2}= arg{c}=0, = /4).
Fig. 2 Simulation of channel amplitude imbalance estimation (arg{f} = /3, |1| = |2 |= 0.1, |c| =0.32, arg{1}= arg{2}= arg{c}=0, = /4).
Fig. 8 Simulation of estimating cross-talk 2 amplitude (|f | = 1.5, arg{f} = /3, |1| = 0.1, |c| =0.32, arg{1}= arg{2}= arg{c}=0, = /4).
Fig. 6 Simulation of estimating cross-talk 1 amplitude (|f | = 1.5, arg{f} = /3, |2 |= 0.1, |c| =0.32, arg{1}= arg{2}= arg{c}=0, = /4).
Fig. 9 Simulation of estimating cross-talk 2 phase (|f | = 1.5, arg{f} = /3, |1| = |2 |= 0.1, |c| =0.32, arg{1}= arg{c}=0, = /4).
Fig. 14 SD of FR estimation error, amplitude an phase estimation errors of channel imbalance and cross-talks for Scheme 5 as a function of SNR, under the conditions of no APN error (i.e. = 0), and |f | = 1.5, arg{f} = /3, |1| = |2 | = 0.1, |c| = 0.32, arg{1} = arg{2} = arg{c}= 0, = /4. (a) FR estimation error; (b) amplitude errors of channel imbalance and cross-talks; (c) phase errors of channel imbalance and cross-talks.
Fig. 12 Comparison of estimated channel imbalance and cross-talk phase errors derived from (a) Scheme 5 and (b) Scheme 6 as a function of APN
Fig. 13 Comparison of the estimated FR errors from Schemes 5 and 6 as a function of (a) amplitude (arg{} = 0) and (b) APN phase (| | = -40dB),
Fig. 11 Comparison of estimated channel imbalance and cross-talk amplitude errors derived by (a) Scheme 5 and (b) Scheme 6 as a function of APN
Fig. 10 Simulation of the estimated FR error as a function of true FR angle, with |f | = 1.5, |1| = |2 |= 0.1, |c| =0.32, arg{1}= arg{2}= arg{c}=0, but different phase imbalance values: (a) arg{f} = /3, (b) arg{f} = 0.
TABLE II STATISTICAL ANALYSIS OF ESTIMATED FR ERRORS CORRESPONDING TO FIG.10 WITH DIFFERENT PHASE IMBALANCE VALUES
Fig. 1 The passive calibrators.
TABLE I STATISTICAL ANALYSIS OF AMPLITUDE AND PHASE ERRORS CORRESPONDING TO THE OPTIMAL CHANNEL IMBALANCE AND CROSS-TALK ESTIMATES IN FIGS.2-9
Journal Article
•
DOI
•
Calibration of Spaceborne CTLR Compact Polarimetric Low-Frequency SAR Using Mixed Radar Calibrators
[...]
Jie Chen
1
,
Shaun Quegan
2
•
Institutions (2)
Beihang University
1
,
University of Sheffield
2
14 Mar 2011
-
IEEE Transactions on Geoscience and Remote Sensing