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机器人学中的状态估计2023最新英文版
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机器人学中的状态估计2023最新英文版
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STATE ESTIMATION FOR
ROBOTICS
– Second Edition –
Timothy D. Barfoot
Copyright
c
2023
Cambridge University Press is the Official Publisher
Draft of the Second Edition Compiled on October 27, 2023
Revision History
11 Jan 2022 Started draft of second edition
28 Sept 2022 Fixed some issues in inertial navigation (9.233),
(9.246-9.250)
5 Oct 2022 Added some new explanatory text to Section 8.1.4 on
adjoints
11 Oct 2022 Added a small footnote on the use of Exp and Ln
12 Oct 2022 Redefined SE
2
(3) Lie algebra variable order start-
ing with (9.198), which caused changes in (9.199),
(9.201), (9.202), (9.208), (9.229), (9.233), (9.238a),
(9.246), and (9.250)
21 Nov 2022 Updated (9.220) to include ∆τ
3
j
terms as this seems
necessary for Q to be positive definite
30 Nov 2022 Corrected (9.244) to remove inverse on D
J:0
14 Dec 2022 Corrected two time indices in (4.211) to be k
14 Dec 2022 Submitted Second Edition to Publisher; everything
after this line may be errata in the official copy
13 Jan 2023 Corrected the fourth line of (9.157) to e
v,k
not e
v,0
26 Jan 2023 Section 11.1.1 corrected to say SE(3) × R
6
26 Jan 2023 Updated (11.18) to have ≈ on second line
3 Feb 2023 Corrected (11.17) to have T not T in second expres-
sion
13 Mar 2023 Removed a few extra brackets in (A.96) and (A.97)
16 Mar 2023 Corrected solution to Exercise 2.15 to remove inverse
from A
xy
in final line
17 Mar 2023 Redefined some subscripts in (A.25) to look symmet-
ric
29 Mar 2023 Corrected text after (8.415) to be
˜
T
iv
4 Apr 2023 Section 1.1 updated sentence on Astrolabe origins
14 Apr 2023 Added missing bracket in underbrace in (C.69)
14 Apr 2023 Sum upper limit fixed to be K in (2.90b)
14 Apr 2023 Fixed subscripts on ξ in (8.363)
21 June 2023 vectorspace → vector space
19 July 2023 Incorporated copyeditor’s changes
11 Aug 2023 Exercise 2.8: changed ‘direct’ to ‘normalized’
25 Aug 2023 Section 2.1.10 Rao’s bio adjusted to reflect his passing
18 Sept 2023 Correction (8.269) to have f on γ
1
iii
Contents
Preface for the First Edition xiii
Preface for the Second Edition xv
Acronyms and Abbreviations xvii
Notation xix
1 Introduction 1
1.1 (2ed update) A Little History 1
1.2 Sensors, Measurements, and Problem Definition 3
1.3 How This Book Is Organized 4
1.4 Relationship to Other Books 5
Part I Estimation Machinery 7
2 Primer on Probability Theory 9
2.1 Probability Density Functions 9
2.1.1 (2ed update) Definitions 9
2.1.2 (2ed update) Marginalization, Bayes’ Rule, Inference 11
2.1.3 (2ed update) Expectations and Moments 11
2.1.4 Statistically Independent, Uncorrelated 13
2.1.5 Shannon and Mutual Information 13
2.1.6 (2ed new) Quantifying the Difference Between PDFs 14
2.1.7 (2ed new) Random Sampling 14
2.1.8 Sample Mean and Covariance 15
2.1.9 Normalized Product 15
2.1.10 (2ed update) Cram´er-Rao Lower Bound and Fisher Information 16
2.2 Gaussian Probability Density Functions 17
2.2.1 (2ed update) Definitions 17
2.2.2 Joint Gaussian PDFs, Their Factors, and Inference 18
2.2.3 Statistically Independent, Uncorrelated 19
2.2.4 (2ed new) Information Form of a Gaussian 20
2.2.5 (2ed new) Marginals of a Joint Gaussian 20
2.2.6 Linear Change of Variables 21
2.2.7 Passing a Gaussian through a Nonlinearity 23
2.2.8 Normalized Product of Gaussians 27
2.2.9 (2ed new) Chi-Squared Distribution and Mahalanobis Distance 28
2.2.10 (2ed update) Shannon Information of a Gaussian 29
2.2.11 Mutual Information of a Joint Gaussian PDF 30
v
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