Files
Syplheed-Reborn/docs/re/captures/rate-curve-aliased-BAD.csv
Claude (auto-RE) 0a84c1358e re(flight): polling faster than the guest updates manufactures a clean curve
Fitting rate against instantaneous speed produced a tidy "rate rises with speed"
relationship, with speeds up to 4795 when the craft's maximum is 1200. It is
entirely an artefact: 20 Hz polling is faster than the guest updates these fields,
so a per-read delta is either exactly zero (no update yet) or a whole frame's
worth divided by a fraction of a frame. 111 of 352 reads were zero on BOTH
channels -- position and attitude update on the same frame, so the two are
perfectly correlated, and dividing each by the short wall dt produced the
correlation out of nothing.

Fix: aggregate over windows spanning many frames (0.5 s). A sum of |delta| over
such a window is right however the updates fall inside it.

This does NOT affect the swept-total probes (roll_axis.py, rate_probe.py) -- they
already summed over the whole dwell, immune for the same reason. Only per-sample
instantaneous rates were ever wrong, so no earlier number moves.

The windowed re-run is NOT yet claimed as a result. It gives plausible magnitudes
but still shows rate rising with speed, against the definition's PitchPlus_Min 150
> _Max 70, and it has two disqualifiers: it ran on an instance where the craft was
already tumbling from the previous sweep, so pinning reported "WEAK -- craft may
not be level", and the sweep started mid-range rather than at maximum. A clean
answer needs a fresh flight with pinning CONFIDENT and nothing before it. Since
what is in doubt is precisely what _Min/_Max mean, a measurement through a
doubtful instrument cannot settle it.

Both datasets kept, the bad one labelled, because the aliased curve is a good
example of what a manufactured correlation looks like.
2026-08-13 23:00:59 +00:00

354 lines
6.2 KiB
CSV

t,speed_units_per_wall_s,rate_deg_per_wall_s
0.05,0.0,0.0
0.101,4682.4,0.0
0.154,1865.9,8.21
0.205,1915.4,22.53
0.273,1722.2,32.72
0.323,2309.7,64.27
0.374,0.0,0.0
0.426,0.0,0.0
0.476,0.0,0.0
0.526,3781.4,166.09
0.576,1133.2,56.22
0.626,2228.8,125.61
0.676,735.8,46.29
0.726,2161.2,150.9
0.777,0.0,0.0
0.827,0.0,0.0
0.877,0.0,0.0
0.927,4795.2,363.58
0.978,1400.3,105.58
1.028,2080.9,159.73
1.078,688.0,53.58
1.129,1018.2,79.65
1.179,0.0,0.0
1.229,0.0,0.0
1.279,3169.4,272.63
1.332,1891.3,159.33
1.382,656.8,55.51
1.432,1958.3,167.87
1.485,311.4,26.7
1.535,0.0,0.0
1.585,0.0,0.0
1.637,2189.9,217.26
1.687,1470.3,152.38
1.737,1832.8,178.53
1.788,611.6,57.44
1.838,311.7,29.03
1.889,0.0,0.0
1.939,0.0,0.0
1.989,2568.6,290.03
2.039,1303.4,156.28
2.09,1571.3,188.96
2.173,987.0,114.66
2.223,1389.3,157.19
2.274,0.0,0.0
2.324,0.0,0.0
2.374,0.0,0.0
2.425,3014.5,437.25
2.476,851.8,137.78
2.526,1720.0,282.99
2.576,855.8,142.04
2.626,1272.7,213.71
2.676,420.4,71.25
2.726,0.0,0.0
2.776,0.0,0.0
2.827,2337.7,393.95
2.879,605.4,103.05
2.929,1229.4,216.06
2.979,798.9,145.37
3.029,1356.7,257.13
3.081,183.1,35.66
3.131,0.0,0.0
3.181,0.0,0.0
3.231,1858.0,372.22
3.281,541.0,112.82
3.332,1372.1,301.88
3.382,335.4,76.89
3.432,658.3,154.84
3.482,162.0,38.8
3.536,0.0,0.0
3.586,0.0,0.0
3.636,1591.8,390.72
3.686,311.3,78.69
3.736,1215.5,316.75
3.786,602.4,159.01
3.839,429.8,113.96
3.889,0.0,0.0
3.939,0.0,0.0
3.989,0.0,0.0
4.04,1835.6,469.81
4.09,311.3,78.92
4.14,1251.2,315.27
4.19,317.9,78.47
4.24,320.5,78.42
4.29,0.0,0.0
4.341,0.0,0.0
4.391,1352.5,313.43
4.441,850.5,192.03
4.492,1033.9,227.09
4.542,1073.0,227.87
4.592,551.1,113.43
4.642,0.0,0.0
4.692,0.0,0.0
4.743,1735.5,337.79
4.793,779.7,147.59
4.843,1186.4,220.17
4.893,808.4,146.17
4.943,1018.0,181.41
4.993,204.4,36.08
5.043,0.0,0.0
5.093,0.0,0.0
5.144,0.0,0.0
5.194,3438.2,575.96
5.244,853.2,142.26
5.294,1685.8,285.28
5.344,1250.1,215.19
5.394,825.0,144.01
5.445,202.2,35.56
5.495,0.0,0.0
5.545,0.0,0.0
5.596,2042.5,361.76
5.674,762.2,138.77
5.725,1171.7,219.95
5.775,384.3,73.55
5.826,0.0,0.0
5.877,0.0,0.0
5.927,0.0,0.0
5.977,1528.0,296.2
6.028,1281.9,256.26
6.078,365.6,75.03
6.128,1073.3,226.52
6.178,176.0,37.88
6.231,0.0,0.0
6.281,0.0,0.0
6.332,1720.1,372.76
6.382,518.3,114.37
6.432,1009.5,230.82
6.484,480.0,112.96
6.534,807.9,194.56
6.584,159.3,38.98
6.675,0.0,0.0
6.725,1449.1,352.93
6.775,477.0,117.26
6.826,927.2,232.38
6.877,306.8,77.6
6.927,928.5,236.59
6.977,154.5,39.37
7.027,0.0,0.0
7.077,0.0,0.0
7.131,1353.2,333.31
7.181,963.9,234.69
7.231,1304.5,311.86
7.281,332.6,77.62
7.331,506.1,116.36
7.381,0.0,0.0
7.432,0.0,0.0
7.482,0.0,0.0
7.534,2615.1,556.47
7.584,1101.8,225.72
7.634,1108.3,222.17
7.686,929.5,182.14
7.736,576.3,111.11
7.786,0.0,0.0
7.836,0.0,0.0
7.886,0.0,0.0
7.936,2840.4,515.81
7.987,807.7,144.56
8.037,1214.6,217.75
8.087,809.7,145.24
8.137,606.3,108.89
8.187,0.0,0.0
8.237,0.0,0.0
8.288,0.0,0.0
8.339,2628.6,463.46
8.389,811.4,144.9
8.439,1198.5,218.35
8.489,392.4,72.53
8.539,784.5,146.63
8.59,0.0,0.0
8.64,0.0,0.0
8.69,0.0,0.0
8.741,2111.3,400.11
8.791,946.6,185.46
8.841,1110.6,224.19
8.891,364.4,75.15
8.941,720.3,150.86
8.991,0.0,0.0
9.042,0.0,0.0
9.092,1792.7,378.77
9.142,529.6,113.67
9.193,1022.7,226.47
9.273,624.6,143.36
9.325,644.6,151.82
9.375,0.0,0.0
9.425,0.0,0.0
9.476,1289.1,307.07
9.526,1122.5,273.41
9.577,311.7,76.8
9.627,789.7,196.14
9.677,156.4,38.99
9.727,0.0,0.0
9.778,0.0,0.0
9.828,2131.2,510.02
9.878,653.9,155.64
9.928,983.1,233.48
9.978,330.0,77.72
10.028,496.6,116.32
10.079,0.0,0.0
10.129,0.0,0.0
10.179,0.0,0.0
10.23,2470.2,540.62
10.282,672.7,144.51
10.333,1067.2,227.85
10.383,1076.8,227.17
10.433,724.0,150.8
10.483,0.0,0.0
10.533,0.0,0.0
10.583,0.0,0.0
10.633,2272.0,451.3
10.683,759.7,148.67
10.734,762.5,148.52
10.784,756.3,146.57
10.834,770.1,148.16
10.885,0.0,0.0
10.935,0.0,0.0
10.985,0.0,0.0
11.035,2168.6,406.08
11.085,984.6,183.61
11.136,1178.3,220.07
11.186,590.5,110.24
11.236,393.0,73.44
11.286,0.0,0.0
11.336,0.0,0.0
11.386,2007.6,367.45
11.436,597.4,109.35
11.486,1180.4,219.81
11.537,1160.8,220.86
11.587,575.3,111.02
11.639,368.0,71.56
11.689,0.0,0.0
11.739,0.0,0.0
11.789,2275.4,445.88
11.879,415.2,83.5
11.929,1448.9,300.69
11.979,356.5,75.48
12.031,0.0,0.0
12.081,0.0,0.0
12.131,1612.8,341.73
12.184,504.1,108.0
12.234,1042.0,228.85
12.284,683.1,153.38
12.334,674.3,153.83
12.386,0.0,0.0
12.473,0.0,0.0
12.524,1701.7,386.01
12.574,672.1,154.19
12.625,974.9,227.26
12.675,330.4,77.54
12.725,986.1,232.99
12.775,163.8,38.73
12.825,0.0,0.0
12.878,0.0,0.0
12.928,0.0,0.0
12.978,2405.7,542.85
13.029,1022.4,230.5
13.079,681.6,153.81
13.129,1354.2,305.37
13.179,343.9,76.77
13.229,692.5,153.38
13.28,0.0,0.0
13.33,0.0,0.0
13.38,0.0,0.0
13.43,2362.5,496.01
13.483,693.6,143.63
13.533,1466.7,300.97
13.583,555.0,112.79
13.633,184.3,37.4
13.683,0.0,0.0
13.735,0.0,0.0
13.785,1917.4,375.17
13.838,542.8,105.29
13.888,1144.2,222.78
13.938,1513.8,297.05
13.988,568.4,111.69
14.038,378.0,74.42
14.088,0.0,0.0
14.139,0.0,0.0
14.189,1933.6,372.51
14.239,955.5,184.91
14.289,756.9,148.61
14.374,662.1,132.25
14.424,554.7,112.16
14.474,0.0,0.0
14.524,0.0,0.0
14.577,1603.7,323.84
14.627,1276.0,263.01
14.677,542.3,113.23
14.727,714.5,150.87
14.777,354.7,75.59
14.83,0.0,0.0
14.88,0.0,0.0
14.93,1795.9,379.83
14.98,355.3,75.74
15.031,1386.0,301.97
15.083,330.9,73.04
15.133,688.3,153.24
15.183,170.9,38.24
15.234,0.0,0.0
15.284,0.0,0.0
15.334,0.0,0.0
15.384,2304.1,499.06
15.435,1027.8,225.69
15.485,1024.9,230.47
15.536,1000.9,229.21
15.586,664.6,153.64
15.636,665.2,154.54
15.687,0.0,0.0
15.737,0.0,0.0
15.788,0.0,0.0
15.84,2131.8,478.6
15.89,856.1,192.06
15.941,1025.4,230.39
15.991,342.4,76.74
16.043,663.2,148.34
16.093,0.0,0.0
16.143,0.0,0.0
16.193,0.0,0.0
16.246,2555.4,545.64
16.296,895.5,189.56
16.373,694.2,146.49
16.424,1443.5,302.27
16.476,0.0,0.0
16.526,0.0,0.0
16.577,0.0,0.0
16.627,2074.2,414.87
16.677,751.3,149.12
16.727,1123.6,223.97
16.777,374.5,74.66
16.827,1122.8,223.93
16.88,0.0,0.0
16.93,0.0,0.0
16.98,0.0,0.0
17.03,2296.0,447.62
17.08,379.9,74.23
17.13,1503.9,297.32
17.18,563.4,111.98
17.233,538.0,107.34
17.283,0.0,0.0
17.333,0.0,0.0
17.383,1890.3,373.65
17.433,1119.5,223.93
17.485,361.3,72.88
17.535,1651.2,337.72
17.585,365.1,75.24
17.635,547.2,113.12
17.686,0.0,0.0
17.736,0.0,0.0
17.786,0.0,0.0
17.839,2490.6,503.11
17.892,1033.4,213.33
17.942,1073.2,226.83
17.995,670.1,143.94
18.045,1223.2,266.8