Range Shadow-Zone Verification
Compare a predicted shadow-zone transition with a measured transition interval and explicit tolerance; this does not certify projectile containment or range safety.
Description
A predicted acoustic shadow-zone transition can be compared with an observed interval.
A predicted acoustic shadow-zone transition can be compared with an observed interval. Agreement in distance is separate from range safety.1
Compare a predicted shadow-zone transition with a measured transition interval and explicit tolerance; this does not certify projectile containment or range safety.
When to use Range Shadow-Zone Verification
Use this tool to compare a predicted shadow-zone transition with a measured transition interval and explicit tolerance; this does not certify projectile containment or range safety.
Choose a supported reference topic, run an input-free reference with an empty object, or prepare the measured values and caller-supplied test records requested. Keep acoustic metrics, frequency, units and test conditions consistent.
How to use Range Shadow-Zone Verification and understand its results
- Choose a supported reference topic, run an input-free reference with an empty object, or prepare the measured values and caller-supplied test records requested. Keep acoustic metrics, frequency, units and test conditions consistent.
- Enter measuredTransitionEndMeters, measuredTransitionStartMeters, predictedTransitionMeters, toleranceMeters using the field table and calculation rules, then run the tool.
- Read predictionErrorToBandMeters, transitionVerifiedWithinTolerance. The explanation below defines the units, signs, ordering and any flags or placeholder values.
- If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
| Input field | Meaning | Value type; see rules below | Requirement |
|---|---|---|---|
| measuredTransitionEndMeters | Measured transition end (m) | number; minimum: 0 | Required |
| measuredTransitionStartMeters | Measured transition start (m) | number; minimum: 0 | Required |
| predictedTransitionMeters | Predicted transition (m) | number; minimum: 0 | Required |
| toleranceMeters | Verification tolerance (m) | number; minimum: 0 | Required |
Enter nonnegative distances/tolerance with measured start≤end. Return error and inclusive error≤tolerance flag.
error=distance of prediction from closed measured interval, zero inside Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| predictionErrorToBandMeters | Prediction error to measured band (m) | number; minimum: 0 |
| transitionVerifiedWithinTolerance | Transition verified within tolerance | boolean |
{
"input": {
"measuredTransitionEndMeters": 120,
"measuredTransitionStartMeters": 100,
"predictedTransitionMeters": 110,
"toleranceMeters": 5
},
"output": {
"predictionErrorToBandMeters": 0,
"transitionVerifiedWithinTolerance": true
}
}Limitations and assumptions
No acoustic propagation, projectile containment or safety certification is performed.
Numeric inputs, where present, must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors. A successfully returned false flag is an evaluated outcome; its meaning is explained above.
Alternative or Complementary methods
Use Parabolic Focus Screen: Calculate the focal distance of a parabolic section from aperture width and depth and screen an occupied location against an explicit focus-zone radius. For a complementary task, use Windscreen Insertion Loss: Calculate measured windscreen insertion loss at a caller-specified frequency without generalizing it to other windscreens or incidence conditions.
References
-
Range Shadow-Zone Verification — tool.io
Similar or alternative tools
- Parabolic Focus Screen
Calculate the focal distance of a parabolic section from aperture width and depth and screen an occupied location against an explicit focus-zone radius.
- Windscreen Insertion Loss
Calculate measured windscreen insertion loss at a caller-specified frequency without generalizing it to other windscreens or incidence conditions.