Using this method, altimeter waveforms measured over the Tsushima Islands in Japan by the Ocean Surface Topography Mission (OSTM)/Jason-2 satellite are retracked. Moreover, the power deficit of waveform trailing edges caused by weak land reflections is compensated for by estimating the ratio of sea surface area within each annular footprint in order to produce pseudo-homogeneous reflected waveforms suitable for the Brown model. In the present study, the peaky-type noise caused by fixed-point bright targets is explicitly detected and masked using the parabolic signature in the sequential along-track waveforms (or, azimuth-range echograms). In previous studies, sub-waveform retrackers, which use waveform samples collected from around leading edges in order to avoid trailing edge noise, have been recommended for coastal waveform retracking. The former reduces echo power, while the latter often produces particularly strong echoes. Generally, the two primary sources of heterogeneous surface reflections are land surfaces and bright targets such as calm surface water. Run npm install to install Node.js package dependencies.Although the Brown mathematical model is the standard model for waveform retracking over open oceans, due to heterogeneous surface reflections within altimeter footprints, coastal waveforms usually deviate from open ocean waveform shapes and thus cannot be directly interpreted by the Brown model. After obtaining the waveform-data.js source code,

Firefox 23+ and Webkit/Blink browsers are required for Web Audio API support.

IE10+ is required for the TypedArray Adapter.

IE9+, Firefox Stable, Chrome Stable, Safari 6+ are fully supported.Browser supportĪny browser supporting ECMAScript 5 will be enough to use the library. Please refer here for full API documentation. The file format used and consumed by WaveformData is documented here as part of the audiowaveform project. app/bin/cli-resampler.js -waveformid=1337 Data format

Track waveform