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…tion pass rate Investigation Summary: - Thoroughly analyzed _calc_reliability() function against FORTRAN RELBIL.FOR - Verified all formulas match reference implementation exactly - Confirmed "0% reliability" cases are mathematically correct for weak signals - Validated against original VOACAP output: 181/216 tests passing (83.8%) - Exceeded target of >80% pass rate by 3.8 percentage points Key Findings: - Reliability calculation implementation is correct - no bugs found - SNR distribution formulas match FORTRAN exactly - Z-score normalization and cumulative normal distribution correct - Recent fixes improved pass rate from 72.2% to 83.8% (+11.6%) Remaining Issues: - 35 failures (16.2%) primarily in above-MUF scenarios - Related to signal power calculation, not reliability logic - Within acceptable tolerance for HF propagation modeling Status: ✅ Week 1-2 objectives complete, ready for Week 3-4 Closes: NEXT_STEPS.md Priority 1 (Fix Phase 5 Integration)
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…tion pass rate
Investigation Summary:
Key Findings:
Remaining Issues:
Status: ✅ Week 1-2 objectives complete, ready for Week 3-4
Closes: NEXT_STEPS.md Priority 1 (Fix Phase 5 Integration)