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1 | // This file is part of INSTINCT, the INS Toolkit for Integrated | ||
2 | // Navigation Concepts and Training by the Institute of Navigation of | ||
3 | // the University of Stuttgart, Germany. | ||
4 | // | ||
5 | // This Source Code Form is subject to the terms of the Mozilla Public | ||
6 | // License, v. 2.0. If a copy of the MPL was not distributed with this | ||
7 | // file, You can obtain one at https://mozilla.org/MPL/2.0/. | ||
8 | |||
9 | /// @file InsGnssLCKFSolution.hpp | ||
10 | /// @brief Loosely-coupled Kalman Filter INS/GNSS errors | ||
11 | /// @author T. Topp (topp@ins.uni-stuttgart.de) | ||
12 | /// @date 2022-06-08 | ||
13 | |||
14 | #pragma once | ||
15 | |||
16 | #include "util/Eigen.hpp" | ||
17 | #include "PosVelAtt.hpp" | ||
18 | #include <cstdint> | ||
19 | |||
20 | #include "Navigation/Transformations/Units.hpp" | ||
21 | |||
22 | namespace NAV | ||
23 | { | ||
24 | /// Loosely-coupled Kalman Filter INS/GNSS errors | ||
25 | class InsGnssLCKFSolution : public PosVelAtt | ||
26 | { | ||
27 | public: | ||
28 | /// @brief Returns the type of the data class | ||
29 | /// @return The data type | ||
30 | 582168 | [[nodiscard]] static std::string type() | |
31 | { | ||
32 |
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1164336 | return "InsGnssLCKFSolution"; |
33 | } | ||
34 | |||
35 | /// @brief Returns the type of the data class | ||
36 | /// @return The data type | ||
37 | ✗ | [[nodiscard]] std::string getType() const override { return type(); } | |
38 | |||
39 | /// @brief Returns the parent types of the data class | ||
40 | /// @return The parent data types | ||
41 | 112 | [[nodiscard]] static std::vector<std::string> parentTypes() | |
42 | { | ||
43 | 112 | auto parent = PosVelAtt::parentTypes(); | |
44 |
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112 | parent.push_back(PosVelAtt::type()); |
45 | 112 | return parent; | |
46 | ✗ | } | |
47 | |||
48 | /// @brief Returns a vector of data descriptors | ||
49 | 290688 | [[nodiscard]] static std::vector<std::string> GetStaticDataDescriptors() | |
50 | { | ||
51 | 290688 | auto desc = PosVelAtt::GetStaticDataDescriptors(); | |
52 |
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290688 | desc.reserve(GetStaticDescriptorCount()); |
53 |
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290688 | desc.emplace_back("KF State Roll error [deg]"); |
54 |
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290688 | desc.emplace_back("KF State Pitch error [deg]"); |
55 |
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290688 | desc.emplace_back("KF State Yaw error [deg]"); |
56 |
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290688 | desc.emplace_back("KF State Position North error [deg]"); |
57 |
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290688 | desc.emplace_back("KF State Position East error [deg]"); |
58 |
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290688 | desc.emplace_back("KF State Position Down error [m]"); |
59 |
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290688 | desc.emplace_back("KF State Velocity North error [m/s]"); |
60 |
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290688 | desc.emplace_back("KF State Velocity East error [m/s]"); |
61 |
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290688 | desc.emplace_back("KF State Velocity Down error [m/s]"); |
62 |
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290688 | desc.emplace_back("KF State Alpha_eb [deg]"); |
63 |
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290688 | desc.emplace_back("KF State Beta_eb [deg]"); |
64 |
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290688 | desc.emplace_back("KF State Gamma_eb [deg]"); |
65 |
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290688 | desc.emplace_back("KF State Position ECEF X error [m]"); |
66 |
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290688 | desc.emplace_back("KF State Position ECEF Y error [m]"); |
67 |
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290688 | desc.emplace_back("KF State Position ECEF Z error [m]"); |
68 |
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290688 | desc.emplace_back("KF State Velocity ECEF X error [m/s]"); |
69 |
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290688 | desc.emplace_back("KF State Velocity ECEF Y error [m/s]"); |
70 |
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290688 | desc.emplace_back("KF State Velocity ECEF Z error [m/s]"); |
71 |
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290688 | desc.emplace_back("Accelerometer bias b_X [m/s^2]"); |
72 |
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290688 | desc.emplace_back("Accelerometer bias b_Y [m/s^2]"); |
73 |
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290688 | desc.emplace_back("Accelerometer bias b_Z [m/s^2]"); |
74 |
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290688 | desc.emplace_back("Gyroscope bias b_X [rad/s]"); |
75 |
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290688 | desc.emplace_back("Gyroscope bias b_Y [rad/s]"); |
76 |
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290688 | desc.emplace_back("Gyroscope bias b_Z [rad/s]"); |
77 | 290688 | return desc; | |
78 | ✗ | } | |
79 | |||
80 | /// @brief Get the number of descriptors | ||
81 | 436020 | [[nodiscard]] static constexpr size_t GetStaticDescriptorCount() { return PosVelAtt::GetStaticDescriptorCount() + 24; } | |
82 | |||
83 | /// @brief Returns a vector of data descriptors | ||
84 | ✗ | [[nodiscard]] std::vector<std::string> staticDataDescriptors() const override { return GetStaticDataDescriptors(); } | |
85 | |||
86 | /// @brief Get the value at the index | ||
87 | /// @param idx Index corresponding to data descriptor order | ||
88 | /// @return Value if in the observation | ||
89 | 145332 | [[nodiscard]] std::optional<double> getValueAt(size_t idx) const override | |
90 | { | ||
91 |
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145332 | INS_ASSERT(idx < GetStaticDescriptorCount()); |
92 |
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145332 | if (idx < PosVelAtt::GetStaticDescriptorCount()) { return PosVelAtt::getValueAt(idx); } |
93 | ✗ | switch (idx) | |
94 | { | ||
95 | ✗ | case PosVelAtt::GetStaticDescriptorCount() + 0: // KF State Roll error [deg] | |
96 | ✗ | if (frame == Frame::NED) { return rad2deg(attitudeError(0)); } | |
97 | ✗ | break; | |
98 | ✗ | case PosVelAtt::GetStaticDescriptorCount() + 1: // KF State Pitch error [deg] | |
99 | ✗ | if (frame == Frame::NED) { return rad2deg(attitudeError(1)); } | |
100 | ✗ | break; | |
101 | ✗ | case PosVelAtt::GetStaticDescriptorCount() + 2: // KF State Yaw error [deg] | |
102 | ✗ | if (frame == Frame::NED) { return rad2deg(attitudeError(2)); } | |
103 | ✗ | break; | |
104 | ✗ | case PosVelAtt::GetStaticDescriptorCount() + 3: // KF State Position North error [deg] | |
105 | ✗ | if (frame == Frame::NED) { return rad2deg(positionError(0)); } | |
106 | ✗ | break; | |
107 | ✗ | case PosVelAtt::GetStaticDescriptorCount() + 4: // KF State Position East error [deg] | |
108 | ✗ | if (frame == Frame::NED) { return rad2deg(positionError(1)); } | |
109 | ✗ | break; | |
110 | ✗ | case PosVelAtt::GetStaticDescriptorCount() + 5: // KF State Position Down error [m] | |
111 | ✗ | if (frame == Frame::NED) { return positionError(2); } | |
112 | ✗ | break; | |
113 | ✗ | case PosVelAtt::GetStaticDescriptorCount() + 6: // KF State Velocity North error [m/s] | |
114 | ✗ | if (frame == Frame::NED) { return velocityError(0); } | |
115 | ✗ | break; | |
116 | ✗ | case PosVelAtt::GetStaticDescriptorCount() + 7: // KF State Velocity East error [m/s] | |
117 | ✗ | if (frame == Frame::NED) { return velocityError(1); } | |
118 | ✗ | break; | |
119 | ✗ | case PosVelAtt::GetStaticDescriptorCount() + 8: // KF State Velocity Down error [m/s] | |
120 | ✗ | if (frame == Frame::NED) { return velocityError(2); } | |
121 | ✗ | break; | |
122 | ✗ | case PosVelAtt::GetStaticDescriptorCount() + 9: // KF State Alpha_eb [deg] | |
123 | ✗ | if (frame == Frame::ECEF) { return rad2deg(attitudeError(0)); } | |
124 | ✗ | break; | |
125 | ✗ | case PosVelAtt::GetStaticDescriptorCount() + 10: // KF State Beta_eb [deg] | |
126 | ✗ | if (frame == Frame::ECEF) { return rad2deg(attitudeError(1)); } | |
127 | ✗ | break; | |
128 | ✗ | case PosVelAtt::GetStaticDescriptorCount() + 11: // KF State Gamma_eb [deg] | |
129 | ✗ | if (frame == Frame::ECEF) { return rad2deg(attitudeError(2)); } | |
130 | ✗ | break; | |
131 | ✗ | case PosVelAtt::GetStaticDescriptorCount() + 12: // KF State Position ECEF X error [m] | |
132 | ✗ | if (frame == Frame::ECEF) { return positionError(0); } | |
133 | ✗ | break; | |
134 | ✗ | case PosVelAtt::GetStaticDescriptorCount() + 13: // KF State Position ECEF Y error [m] | |
135 | ✗ | if (frame == Frame::ECEF) { return positionError(1); } | |
136 | ✗ | break; | |
137 | ✗ | case PosVelAtt::GetStaticDescriptorCount() + 14: // KF State Position ECEF Z error [m] | |
138 | ✗ | if (frame == Frame::ECEF) { return positionError(2); } | |
139 | ✗ | break; | |
140 | ✗ | case PosVelAtt::GetStaticDescriptorCount() + 15: // KF State Velocity ECEF X error [m/s] | |
141 | ✗ | if (frame == Frame::ECEF) { return velocityError(0); } | |
142 | ✗ | break; | |
143 | ✗ | case PosVelAtt::GetStaticDescriptorCount() + 16: // KF State Velocity ECEF Y error [m/s] | |
144 | ✗ | if (frame == Frame::ECEF) { return velocityError(1); } | |
145 | ✗ | break; | |
146 | ✗ | case PosVelAtt::GetStaticDescriptorCount() + 17: // KF State Velocity ECEF Z error [m/s] | |
147 | ✗ | if (frame == Frame::ECEF) { return velocityError(2); } | |
148 | ✗ | break; | |
149 | ✗ | case PosVelAtt::GetStaticDescriptorCount() + 18: // Accelerometer bias b_X [m/s^2] | |
150 | ✗ | return b_biasAccel(0); | |
151 | ✗ | case PosVelAtt::GetStaticDescriptorCount() + 19: // Accelerometer bias b_Y [m/s^2] | |
152 | ✗ | return b_biasAccel(1); | |
153 | ✗ | case PosVelAtt::GetStaticDescriptorCount() + 20: // Accelerometer bias b_Z [m/s^2] | |
154 | ✗ | return b_biasAccel(2); | |
155 | ✗ | case PosVelAtt::GetStaticDescriptorCount() + 21: // Gyroscope bias b_X [rad/s] | |
156 | ✗ | return b_biasGyro(0); | |
157 | ✗ | case PosVelAtt::GetStaticDescriptorCount() + 22: // Gyroscope bias b_Y [rad/s] | |
158 | ✗ | return b_biasGyro(1); | |
159 | ✗ | case PosVelAtt::GetStaticDescriptorCount() + 23: // Gyroscope bias b_Z [rad/s] | |
160 | ✗ | return b_biasGyro(2); | |
161 | ✗ | default: | |
162 | ✗ | return std::nullopt; | |
163 | } | ||
164 | ✗ | return std::nullopt; | |
165 | } | ||
166 | |||
167 | /// @brief Available Frames | ||
168 | enum class Frame : uint8_t | ||
169 | { | ||
170 | ECEF, ///< Earth-Centered Earth-Fixed frame | ||
171 | NED, ///< Local North-East-Down frame | ||
172 | }; | ||
173 | /// Frame in which the errors are set | ||
174 | Frame frame = Frame::NED; | ||
175 | |||
176 | /// δ𝛙_{i,e,n}b_{i,e,n} The attitude error in {i,e,n} frame coordinates in [rad] | ||
177 | Eigen::Vector3d attitudeError{ 0, 0, 0 }; | ||
178 | /// δ𝐯_{i,e,n} The velocity error in {i,e,n} coordinates in [m/s] | ||
179 | Eigen::Vector3d velocityError{ 0, 0, 0 }; | ||
180 | /// NED: δ𝐩 = [δ𝜙 δλ δ𝘩] The position error (latitude, longitude, altitude) in [rad, rad, m] | ||
181 | /// ECEF/i: δr The position error in [m] | ||
182 | Eigen::Vector3d positionError{ 0, 0, 0 }; | ||
183 | |||
184 | /// 𝐛_a The accelerometer bias in body frame in [m/s^2] | ||
185 | Eigen::Vector3d b_biasAccel{ 0, 0, 0 }; | ||
186 | /// 𝐛_g The gyroscope bias in body frame in [rad/s] | ||
187 | Eigen::Vector3d b_biasGyro{ 0, 0, 0 }; | ||
188 | }; | ||
189 | |||
190 | } // namespace NAV | ||
191 |