Fix_And_Hold 使用及存在问题
RTKLIB中使用FIXANDHOLD没有对各个卫星的方差进行排序，仅仅是使用了截止高度角。而大软件中进行了排序后，使用30°的截止角作为hold条件。
1.总卫星数与hold卫星数，及ratio，全部卫星fix and hold时，ratio值最高
Time:180484 Num:18 HoldNum:17 Ratio: 5.406
固定成功率100.00%
Time:180494 Num:18 HoldNum:17 Ratio: 5.557
固定成功率100.00%
Time:180504 Num:18 HoldNum:17 Ratio: 5.785
固定成功率100.00%
Time:180514 Num:18 HoldNum:17 Ratio: 5.906
固定成功率100.00%
Time:180524 Num:18 HoldNum:17 Ratio: 5.993
固定成功率100.00%
Time:180534 Num:18 HoldNum:17 Ratio: 6.384
固定成功率100.00%
Time:180544 Num:18 HoldNum:17 Ratio: 6.597
固定成功率100.00%
Time:180554 Num:18 HoldNum:17 Ratio: 6.815
固定成功率100.00%
Time:180564 Num:18 HoldNum:17 Ratio: 7.124
固定成功率100.00%
Time:180574 Num:18 HoldNum:17 Ratio: 7.764
固定成功率100.00%
Time:180584 Num:18 HoldNum:17 Ratio: 8.031
固定成功率100.00%
Time:180594 Num:18 HoldNum:17 Ratio: 8.296
固定成功率100.00%
Time:180604 Num:18 HoldNum:17 Ratio: 8.316
固定成功率100.00%
Time:180614 Num:18 HoldNum:17 Ratio: 8.404
固定成功率100.00%
Time:180624 Num:18 HoldNum:17 Ratio: 8.869
固定成功率100.00%
Time:180634 Num:18 HoldNum:17 Ratio: 9.188
固定成功率100.00%
Time:180644 Num:18 HoldNum:17 Ratio: 9.754
固定成功率100.00%
Time:180654 Num:18 HoldNum:17 Ratio: 9.759
固定成功率100.00%
Time:180664 Num:18 HoldNum:17 Ratio: 9.849
固定成功率100.00%
Time:180674 Num:18 HoldNum:17 Ratio: 10.277
固定成功率100.00%
Time:180684 Num:18 HoldNum:17 Ratio: 10.538
固定成功率100.00%
Time:180694 Num:18 HoldNum:17 Ratio: 11.273
固定成功率100.00%
Time:180704 Num:18 HoldNum:17 Ratio: 11.377
固定成功率100.00%
Time:180714 Num:18 HoldNum:17 Ratio: 12.078
固定成功率100.00%
Time:180724 Num:18 HoldNum:17 Ratio: 12.903
固定成功率100.00%
Time:180734 Num:18 HoldNum:17 Ratio: 13.516
固定成功率100.00%
Time:180744 Num:17 HoldNum:17 Ratio:999.990
固定成功率100.00%
Time:180754 Num:17 HoldNum:17 Ratio:999.990
固定成功率100.00%
Time:180764 Num:17 HoldNum:17 Ratio:999.990
固定成功率100.00%
Time:180774 Num:17 HoldNum:17 Ratio:999.990
固定成功率100.00%
Time:180784 Num:17 HoldNum:17 Ratio:999.990
固定成功率100.00%
Time:180794 Num:17 HoldNum:17 Ratio:999.990
固定成功率100.00%
2.增加观测卫星，ratio降低
Time:181594 Num:15 HoldNum:13 Ratio:145.602
固定成功率100.00%
Time:181604 Num:15 HoldNum:13 Ratio:141.484
固定成功率100.00%
Time:181614 Num:15 HoldNum:13 Ratio:142.661
固定成功率100.00%
Time:181624 Num:17 HoldNum:13 Ratio: 10.386
固定成功率100.00%
Time:181634 Num:17 HoldNum:15 Ratio:143.435
固定成功率100.00%
Time:181644 Num:17 HoldNum:15 Ratio:144.719
固定成功率100.00%
ime:182024 Num:17 HoldNum:14 Ratio:289.658
固定成功率100.00%
Time:182034 Num:17 HoldNum:14 Ratio:297.459
固定成功率100.00%
Time:182044 Num:18 HoldNum:14 Ratio: 4.042
固定成功率100.00%
Time:182054 Num:18 HoldNum:14 Ratio: 5.491
固定成功率100.00%
Time:182064 Num:18 HoldNum:14 Ratio: 6.360
固定成功率100.00%
Time:182074 Num:18 HoldNum:14 Ratio: 7.755
固定成功率100.00%
Time:182084 Num:18 HoldNum:14 Ratio: 8.765
固定成功率100.00%
Time:182094 Num:18 HoldNum:14 Ratio: 11.254
3.修改初始化Q矩阵对角阵由0.5*0.5，改为50*50，结果ratio上不去，上升缓慢
Time:202206 Num:17 HoldNum:0 Ratio: 3.066
Time:202214 Num:17 HoldNum:0 Ratio: 2.933
Time:202224 Num:17 HoldNum:0 Ratio: 3.117
Time:202234 Num:17 HoldNum:0 Ratio: 3.305
Time:202244 Num:17 HoldNum:0 Ratio: 3.318
Time:202255 Num:17 HoldNum:0 Ratio: 3.544
Time:202264 Num:17 HoldNum:0 Ratio: 3.640
Time:202274 Num:21 HoldNum:0 Ratio: 2.863
Time:202284 Num:21 HoldNum:0 Ratio: 3.064
Time:202294 Num:21 HoldNum:0 Ratio: 3.104
Time:202304 Num:21 HoldNum:0 Ratio: 3.138
固定成功率100.00%
Time:202314 Num:21 HoldNum:13 Ratio: 4.538
固定成功率100.00%
Time:202324 Num:21 HoldNum:13 Ratio: 4.827
固定成功率100.00%
Time:202334 Num:21 HoldNum:13 Ratio: 5.115
固定成功率100.00%
Time:202344 Num:21 HoldNum:13 Ratio: 5.111
固定成功率100.00%
Time:202354 Num:21 HoldNum:13 Ratio: 5.244
固定成功率100.00%
Time:202364 Num:21 HoldNum:13 Ratio: 5.308
固定成功率100.00%
Time:202374 Num:21 HoldNum:13 Ratio: 5.432
固定成功率100.00%
Time:202384 Num:21 HoldNum:13 Ratio: 5.587
固定成功率100.00%
3.修改初始化Q矩阵对角阵由0.5*0.5，改为5000*5000，结果同上，影响不大
Time:202573 Num:9 HoldNum:0 Ratio: -1.#IO
Time:202574 Num:9 HoldNum:0 Ratio: -1.#IO
Time:202584 Num:11 HoldNum:0 Ratio: 3.997
Time:202594 Num:14 HoldNum:0 Ratio: 5.341
Time:202604 Num:17 HoldNum:0 Ratio: 4.545
Time:202614 Num:17 HoldNum:0 Ratio: 4.668
Time:202624 Num:17 HoldNum:0 Ratio: 4.609
Time:202634 Num:21 HoldNum:0 Ratio: 3.564
Time:202644 Num:21 HoldNum:0 Ratio: 3.730
Time:202654 Num:21 HoldNum:0 Ratio: 3.874
Time:202664 Num:21 HoldNum:0 Ratio: 4.096
固定成功率100.00%
Time:202674 Num:21 HoldNum:13 Ratio: 6.636
固定成功率100.00%
Time:202684 Num:21 HoldNum:13 Ratio: 7.175
固定成功率100.00%
Time:202694 Num:21 HoldNum:13 Ratio: 7.599
固定成功率100.00%
Time:202704 Num:21 HoldNum:13 Ratio: 7.968
固定成功率100.00%
Time:202714 Num:21 HoldNum:13 Ratio: 7.887
固定成功率100.00%
Time:202724 Num:21 HoldNum:13 Ratio: 8.257
固定成功率100.00%
Time:202734 Num:21 HoldNum:13 Ratio: 8.118
固定成功率100.00%
Time:202744 Num:21 HoldNum:14 Ratio: 8.163
固定成功率100.00%
Time:202754 Num:21 HoldNum:14 Ratio: 8.440
固定成功率100.00%
Time:202764 Num:21 HoldNum:14 Ratio: 8.589
固定成功率100.00%
Time:202774 Num:21 HoldNum:14 Ratio: 9.202
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