5d919818e7
Fix default mothership URL from /ws to /ws/node to match the ingestion server's actual WebSocket endpoint. Remove unused updateWalkerPosition and walkerDistanceToNode functions from walker.go (the walker update logic lives in main.go's updateWalkers). Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
28 lines
720 B
Go
28 lines
720 B
Go
// Package main provides walker simulation utilities for the CSI simulator.
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package main
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import (
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"math"
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)
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// computeWalkerDeltaRMS computes the expected deltaRMS for a walker at a given position
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// relative to a TX-RX link pair, using the Fresnel zone model.
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// Zone 1: 0.15, zone 2: 0.15/4, zone 3: 0.15/9, etc. (inverse square decay).
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func computeWalkerDeltaRMS(tx, rx, walker Point) float64 {
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d1 := distance(tx, walker)
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d2 := distance(walker, rx)
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dDirect := distance(tx, rx)
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excess := d1 + d2 - dDirect
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if excess < 0 {
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excess = 0
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}
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zoneNumber := int(math.Ceil(excess / halfWavelength))
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if zoneNumber < 1 {
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zoneNumber = 1
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}
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decay := 1.0 / math.Pow(float64(zoneNumber), 2.0)
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return 0.15 * decay
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}
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