Description
Return target overlap with a positive-width radar gate.
Radar and lidar measurements combine propagation distance, pulse/gate geometry, background and instrument response. A local range or normalization term can be useful without detecting a target, retrieving atmospheric properties or establishing calibrated sampling resolution.
Return target overlap with a positive-width radar gate.
When to use this tool
Use Radar Gate Overlap Fraction when checking the stated radar/lidar geometry, signal or transmission convention.
How to use the tool and how it works
- Enter gateStart, gateEnd, targetStart, targetEnd. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read overlap, gateFraction. Use the output convention below.
Return target overlap with a positive-width radar gate. Require gateEnd > gateStart and ordered target bounds; overlap = max(0,min(ends)-max(starts)), gateFraction = overlap/gate width.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| gateStart | Gate Start | Required. Finite number. |
| gateEnd | Gate End | Required. Finite number. |
| targetStart | Target Start | Required. Finite number. |
| targetEnd | Target End | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| overlap | Overlap | Required. Finite number. |
| gateFraction | Gate Fraction Unit: 1. | Required. Finite number. |
{
"input": {
"gateStart": 0,
"gateEnd": 100,
"targetStart": 50,
"targetEnd": 150
},
"output": {
"overlap": 50,
"gateFraction": 0.5
}
}Limitations and assumptions
- Touching intervals give zero width; target detection, beam response and an actual sampled volume are not determined.
- 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 verified instrument calibration and a complete appropriate retrieval/response model, including geometry and signal uncertainty, for actual remote-sensing conclusions.
References
Similar or alternative tools
- Radar Range Gate Volume Term
Return a thin-gate radar sampling-volume approximation.
- Radar Range Resolution Pulse Width Term
Return ideal uncompressed radar range resolution.