Multichannel Along-Track Interferometric SAR Systems: Moving Targets Detection and Velocity Estimation

Table 3

RMSE values of the estimated radial velocity relative to data generated with different values of SCR using the target deterministic RCS model processed with Gaussian RCS-derived likelihood functions, using, respectively, the nominal value of SCR (SCR_𝑛), the estimated (by (9)) value of SCR (SCR_𝑒), and a fixed value of SCR = 30 dB (SCR_𝑓). All other parameters (CNR = 10 dB, 𝛾_𝑐=1, etc.) are fixed.

SCR = 5 dB

SCR = 10 dB

SCR = 15 dB

SCR = 20 dB

𝑢𝑟

SCR𝑛

SCR𝑒

SCR𝑓

SCR𝑛

SCR𝑒

SCR𝑓

SCR𝑛

SCR𝑒

SCR𝑓

SCR𝑛

SCR𝑒

SCR𝑓

1𝑒^−3

3.77𝑒^−4

4.24𝑒^−4

4.14𝑒^−4

1.73𝑒^−4

1.82𝑒^−4

2.26𝑒^−4

9.45𝑒^−5

9.68𝑒^−5

1.23𝑒^−4

5.07𝑒^−5

5.23𝑒^−5

6.33𝑒^−5

2𝑒^−3

5.37𝑒^−4

5.55𝑒^−4

6.48𝑒^−4

2.97𝑒^−4

2.99𝑒^−4

3.54𝑒^−4

1.46𝑒^−4

1.51𝑒^−4

1.93𝑒^−4

8.62𝑒^−5

8.98𝑒^−5

1.08𝑒^−4

3𝑒^−3

1.30𝑒^−3

1.15𝑒^−3

1.21𝑒^−3

3.58𝑒^−4

3.73𝑒^−4

4.75𝑒^−4

1.96𝑒^−4

1.97𝑒^−4

2.71𝑒^−4

1.05𝑒^−4

1.08𝑒^−4

1.42𝑒^−4