Quick Answer
Calculate ILS Localizer Course Width and Signal Integrity Metric
Calculator
Result Interpretation
ILS Localizer Course Width and Signal Integrity Metric Calculator computes Localizer Course Width and Signal Integrity Checker Value in dimensionless using the defined engineering formula and the input values provided.
Worked Example
Verified calculation
Given:
- Localizer Slope Factor = 0.0012
- Carrier plus Sideband Amplitude = 1.2
- Design DDM Threshold at Full Scale = 0.155
- Sideband Only Amplitude = 0.8
- Frequency-Dependent Correction Factor = 1
Expected Result:
- Localizer Course Width and Signal Integrity Checker Value = 143.21143237729
Engineering Interpretation:
Under the given input conditions, the calculated result is: Localizer Course Width and Signal Integrity Checker Value = 143.21143237729 dimensionless.
The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from automatically validated test cases.
Formula / Method
localizer course width and signal integrity checker value = (2.0 * atan(0.9 * design ddm threshold at full scale / (localizer slope factor * frequency-dependent correction factor)) * 180.0 / 3.14159265358979) * (1.0 - abs((carrier plus sideband amplitude - sideband only amplitude) / (carrier plus sideband amplitude + sideband only amplitude)))Formula family: formula_airport_instrument_landing_system_ils_localizer_course_width_and_signal_integrity_checker
Variables
| Symbol | Label | Role | Description |
|---|---|---|---|
| DDM_threshold | Design DDM Threshold at Full Scale | INPUT | Design DDM Threshold at Full Scale |
| slope_factor | Localizer Slope Factor | INPUT | Localizer Slope Factor |
| frequency_correction | Frequency-Dependent Correction Factor | INPUT | Frequency-Dependent Correction Factor |
| CSB_amplitude | Carrier plus Sideband Amplitude | INPUT | Carrier plus Sideband Amplitude |
| SBO_amplitude | Sideband Only Amplitude | INPUT | Sideband Only Amplitude |
| result | Localizer Course Width and Signal Integrity Checker Value | OUTPUT | Localizer Course Width and Signal Integrity Checker Value |
Calculation Steps
- Enter the design ddm threshold at full scale in dimensionless.
- Enter the localizer slope factor in V/deg.
- Enter the frequency-dependent correction factor in dimensionless.
- Enter the carrier plus sideband amplitude in V.
- Enter the sideband only amplitude in V.
- Step 1: Compute localizer course width and signal integrity checker value.
- Read the localizer course width and signal integrity checker value (dimensionless) from the results.
Engineering Summary
Calculate ILS Localizer Course Width and Signal Integrity Metric
Frequently Asked Questions
What does this calculator calculate?
The ILS Localizer Course Width and Signal Integrity Metric Calculator estimates Localizer Course Width and Signal Integrity Checker Value based on the input parameters you provide
Why is design ddm threshold at full scale important in this calculation?
design ddm threshold at full scale is directly proportional to localizer course width and signal integrity checker value. When you enter design ddm threshold at full scale in dimensionless, the calculator uses it in the engineering formula to compute the output
How should I interpret the result localizer course width and signal integrity checker value?
The calculator outputs localizer course width and signal integrity checker value in dimensionless. The result is computed directly from the input values using the defined engineering formula
What units should I use for the inputs?
Enter each value in the units shown next to the input field: Design DDM Threshold at Full Scale (dimensionless), Localizer Slope Factor (V/deg), Frequency-Dependent Correction Factor (dimensionless), Carrier plus Sideband Amplitude (V), Sideband Only Amplitude (V). Make sure all inputs use the specified units for consistent results
What assumptions does this calculator use?
This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment
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