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Free-Space Optical (FSO) Link Budget & Fog Attenuation Calculator

Easily calculate and compute free-space optical (fso) link budget & fog attenuation calculator with accurate equations, live formulas, and expert guidance.

Calculated Result
-3.9 dBm

Received Optical Power (P_rx)

Received Optical Power (P_rx)

-3.9 dBm

Link Margin Db

34.1

Specific Fog Attenuation Db Per Km

0.2

Geometric Spreading Loss Db

20.67

Fso Link Availability

HIGH AVAILABILITY (> 99.9% 5-Nines Tier)

-3.9 — dBm

Calculation Breakdown

  1. Applied FormulaModels atmospheric optical transmission, geometric beam divergence spreading, Kim/Kruse fog mie-scattering attenuation, and link margin for terrestrial laser communication.P_{\text{rx}} = P_{\text{tx}} \frac{D_{\text{rx}}^2}{(\theta_{\text{div}} R)^2} \tau_{\text{opt}} 10^{-\gamma_{\text{fog}} R / 10}, \quad \gamma_{\text{fog}} = \frac{3.91}{V} \left(\frac{\lambda}{550}\right)^{-q}

FSO Link Budget & Fog Metric Output

Interactive visualization based on your current inputs

Calculated Value
-3.9-2.7-1.4-0.21.0Received Optical Power (P_rx)

What Is the Free-Space Optical (FSO) Link Budget & Fog Attenuation Calculator?

This tool computes free-space optical (fso) link budget & fog attenuation calculator with high precision arithmetic.

How Does the Free-Space Optical (FSO) Link Budget & Fog Attenuation Calculator Work?

Models atmospheric optical transmission, geometric beam divergence spreading, Kim/Kruse fog mie-scattering attenuation, and link margin for terrestrial laser communication.

Free-Space Optical (FSO) Link Budget & Fog Attenuation Calculator Formula & Variables

The core mathematical equation utilized by this calculator is expressed as:

Prx=PtxDrx2(θdivR)2τopt10−γfogR/10,γfog=3.91V(λ550)−qP_{\text{rx}} = P_{\text{tx}} \frac{D_{\text{rx}}^2}{(\theta_{\text{div}} R)^2} \tau_{\text{opt}} 10^{-\gamma_{\text{fog}} R / 10}, \quad \gamma_{\text{fog}} = \frac{3.91}{V} \left(\frac{\lambda}{550}\right)^{-q}

Models atmospheric optical transmission, geometric beam divergence spreading, Kim/Kruse fog mie-scattering attenuation, and link margin for terrestrial laser communication.

How to Use the Free-Space Optical (FSO) Link Budget & Fog Attenuation Calculator

  1. Enter your parameters into the designated input fields to calculate the result immediately.

Step-by-Step Example Calculation

Free-Space Optical (FSO) Link Budget & Fog Attenuation Calculator Example

Input Values:

transmitPowerDbm:20
linkDistanceMeters:1200
beamDivergenceMrad:1.8
receiverApertureDiamMm:200
visibilityKm:2.5
Worked Steps: Sample evaluation based on standard reference conditions.

Understanding Your Result

The calculated primary figure indicates the optimal or required dBm.

Factors That Affect the Result

  • Measurement tolerances, operational variance, and real-world conditions.

When Should You Use This Calculator?

  • Everyday budgeting, technical homework, professional estimation, and household projects.

Assumptions & Limitations

  • Assumes standard atmospheric or environmental parameters unless specified.

Frequently Asked Questions

Calculation Accuracy & Reference Note

Double-precision IEEE 754 arithmetic with validated empirical constants.

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