6f2f6d2d72
- NAV viewer v5: grid 2x2 (map + charts), trail slider, play, layer toggles - Datebar: date picker + datalist, fetches /api/data-dates from :8766 - Mission label shows #NN-folder (X sessions) in green or grey - Tools: parse_usv_nav, extract_mcap_signals, extract_usv_pwm, merge_nav_usbl, usbl_to_json, check_sync, parse_kogger_usbl - Vendor: Kogger-Protocol docs
72 lines
2.4 KiB
Python
72 lines
2.4 KiB
Python
#!/usr/bin/env python3
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"""Check temporal alignment between MCAP AUV, USV PWM, and USBL data."""
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import json, os, sys
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from datetime import datetime, timezone
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def fmt(ms):
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if ms == 0: return 'N/A'
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return datetime.fromtimestamp(ms/1000, tz=timezone.utc).strftime('%Y-%m-%d %H:%M:%S')
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def load(path):
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with open(path) as f:
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return json.load(f)
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base = os.path.join(os.path.dirname(os.path.dirname(os.path.abspath(__file__))), 'output')
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sources = {}
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# MCAP signals
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mcap_path = os.path.join(base, 'mcap_signals.json')
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if os.path.exists(mcap_path):
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d = load(mcap_path)
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n = len(d.get('depth',[])) + len(d.get('pwm_auv',{}).get('samples',[])) + len(d.get('state',[]))
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sources['MCAP AUV'] = {'t_min': d['t_min_utc_ms'], 't_max': d['t_max_utc_ms'], 'n': n}
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else:
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print(f"MISSING: {mcap_path}")
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# USV PWM
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usv_path = os.path.join(base, 'usv_pwm.json')
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if os.path.exists(usv_path):
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d = load(usv_path)
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n = sum(len(v) for v in d.get('M',{}).values()) + sum(len(v) for v in d.get('RC',{}).values())
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sources['USV PWM'] = {'t_min': d['t_min_utc_ms'], 't_max': d['t_max_utc_ms'], 'n': n}
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else:
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print(f"MISSING: {usv_path}")
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# USBL
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usbl_path = os.path.join(base, 'usbl.json')
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if os.path.exists(usbl_path):
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d = load(usbl_path)
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pts = d.get('points', [])
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if pts:
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t_vals = [p['t_ms'] for p in pts]
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sources['USBL'] = {'t_min': min(t_vals), 't_max': max(t_vals), 'n': len(pts)}
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else:
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sources['USBL'] = {'t_min': 0, 't_max': 0, 'n': 0}
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else:
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print(f"MISSING: {usbl_path}")
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print(f"\n{'Source':<12} | {'t_min UTC':<20} | {'t_max UTC':<20} | {'n_pts':>6}")
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print('-' * 68)
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for name, s in sources.items():
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print(f"{name:<12} | {fmt(s['t_min']):<20} | {fmt(s['t_max']):<20} | {s['n']:>6}")
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# Overlap MCAP vs USV
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if 'MCAP AUV' in sources and 'USV PWM' in sources:
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mcap = sources['MCAP AUV']
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usv = sources['USV PWM']
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overlap_ms = min(mcap['t_max'], usv['t_max']) - max(mcap['t_min'], usv['t_min'])
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print(f"\nMCAP t_min: {fmt(mcap['t_min'])} UTC")
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print(f"USV t_min: {fmt(usv['t_min'])} UTC")
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diff_min = (mcap['t_min'] - usv['t_min']) / 60000
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print(f"t_min diff: {diff_min:+.1f} min (MCAP vs USV)")
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if overlap_ms > 60000:
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print(f"OK - overlap: {overlap_ms//1000} s")
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elif overlap_ms < 0:
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print(f"WARNING: no overlap! gap = {-overlap_ms//1000} s")
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else:
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print(f"SUSPECT: overlap <60s: {overlap_ms//1000} s")
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if __name__ == '__main__':
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pass
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