Description
Return acoustic survey range bounds from round-trip times.
Aquatic gradients, light attenuation, pressure and acoustic range depend on depth signs and supplied physical coefficients. A local gradient or ideal propagation term does not identify a thermocline, prove whole-lake turnover or detect an organism. Empirical optical products and sound speeds require context-specific measurement.
Return acoustic survey range bounds from round-trip times.
When to use this tool
Use Acoustic Fish Survey Range Bin when checking the stated local aquatic gradient, attenuation, pressure or range convention.
How to use the tool and how it works
- Enter twoWayStartSeconds, twoWayEndSeconds, soundSpeed. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read nearRange, farRange, thickness. Use the output convention below.
Return acoustic survey range bounds from round-trip times. Require nonnegative ordered two-way times and soundSpeed > 0; near/far = time*speed/2, thickness = timeDifference*speed/2.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| twoWayStartSeconds | Round-trip acoustic time to near edge; range divides by two. | Required. Finite number; minimum 0. |
| twoWayEndSeconds | Two Way End Seconds | Required. Finite number. |
| soundSpeed | Sound Speed | Required. Finite number; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| nearRange | Near Range | Required. Finite number. |
| farRange | Far Range | Required. Finite number. |
| thickness | Thickness | Required. Finite number. |
{
"input": {
"twoWayStartSeconds": 0.01,
"twoWayEndSeconds": 0.02,
"soundSpeed": 1500
},
"output": {
"nearRange": 7.5,
"farRange": 15,
"thickness": 7.5
}
}Limitations and assumptions
- This assumes a fixed propagation speed; no acoustic target detection, fish abundance or safe acoustic exposure is inferred.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use calibrated profiles, appropriate optical/acoustic conditions and a complete suitable physical model for field interpretation or safe operations.
References
Similar or alternative tools
- Sample Water Column Support Depth
Return sampled depth fraction within a water column.
- Water Layer Sampling Thickness
Return overlap of a sample-depth interval with a layer.