Horizontally stratified ocean with horizontally moving source and receiver. The source is moving at velocity and bearing , while the receiver is moving at velocity and bearing . Range origin is defined as the source position at time zero when the source begins transmitting.
(Color online) A section of the 100–900 Hz ( s) source spectrum for LFM pulses in (a) magnitude and (b) phase.
(Color online) Sensitivity plots for a static source/receiver case.
(Color online) Histograms of four-parameter inversions for the static source and receiver case. The intensity plots are the histograms for the Monte Carlo simulation corresponding to 200 noise realizations with SNR fixed at dB and number of LFM pulses . Histograms are stacked vertically along the horizontal axis. Color bars indicate the relative frequency values.
(Color online) Histograms of four-parameter inversions for the moving source/static receiver case, SNR dB, and number of LFM pulses with corresponding synthetic aperture of [2.5, 5, 10, 20, 40, 80, 160] m for (a) uniform Doppler, and (b) waveguide Doppler.
(Color online) (a) Simulated received spectrum (499–501 Hz) for with corresponding synthetic aperture of [2.5, 10, 80] m. (b) Same as (a) but prior to modal summation.
(Color online) Histograms of four-parameter waveguide Doppler based inversions for the moving source/static receiver case, SNR dB and number of LFM pulses with corresponding synthetic aperture of [2.5, 5, 10, 20, 40, 80, 160] m. Frequency sampling within ±0.2 Hz band at every five spectral peaks.
(Color online) SW06 experiment site, bathymetry, source, and receiver positions on JD238 (26 August 2006) 2000–2059 UTC.
(Color online) Power spectral density of received signal.
(Color online) (a) SW06 SHARK interpolated sound speed profile from 1830–2229 UTC. Temperature sensor depths ( ): 2, 4, 6, 7, 11, 13, 15, 18, 22, 26, 33, 41, 56, 71, and 78 m. (b) Mean SSP and EOFs derived from SHARK SSPs.
(Color online) Section of SW06 received signal spectrum with LFM pulses .
SW06 64 s data inversion scatterplots for with a synthetic aperture of 160 m for (a) waveguide Doppler model and (b) uniform Doppler model. The vertical dashed line shows the final inversion results with SNR dB.
(Color online) SSP inversion results using SW06 experimental data and with waveguide Doppler and uniform Doppler models.
Source, propagation, and receiver frequencies mapping relationships where the first row is with respect to receiver frequency and the second is with respect to source frequency .
Baseline model parameters.
SW06 data inversion parameters search bounds and results for .
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