Differences

This shows you the differences between two versions of the page.

--- misc:investigations:lps-precision [2017-05-11 15:05]
kristoffer
+++ misc:investigations:lps-precision [2017-07-07 09:50]
arnaud [The results]
@@ Line 23: / Line 23: @@
 | 1.62 | 4.80 | 1.44  | 1.67 |0.03 | 4.64 |-0.16| 1.40 |-0.27| 0.013  | 0.0093 | 0.013 |
+[[https://docs.google.com/spreadsheets/d/1ggHmUmRQ1N15vgPnumlmCsrpjw32Cm7DYKf-GYCoKck|Measurements]]
 ===== Measurement of accuracy and noise of 3D estimate and ranges =====
@@ Line 47: / Line 48: @@
 === Analysis ===
+== Estimated position ==
+^ Physical position ^^^ Average estimated position ^^^^^^ Std-dev of estimated position ^^^ Average error ^
+^ X ^ Y ^ Z ^ X ^ Err ^ Y ^ Err ^ Z ^ Err ^ X ^ Y ^ Z ^ distance ^
+| 5.00 | 1.50 | 0.76 | 4.96 | 0.017 | 1.60 | 0.041 | -0.096 | -0.213 | 0.017 | 0.018 | 0.015 | 0.237 |
+== Raw range measurements ==
 Physical distances from Crazyflie to anchors are calculated from positions of anchors and the Crazyflie.
+Average and standard deviations are calculated on all data, including outliers.
+The main part of the error should be caused by the antenna delay, expected to be the same for all anchors.
 ^ ^ Physical ^ Raw range measurements ^^^
@@ Line 60: / Line 72: @@
 |  5  | 2.20 | 1.90 | 0.008 | 0.30 |
+== Histogram over raw range measurements ==
+{{:misc:investigations:hist_ref_setup.png?direct|}}

Bitcraze Wiki