[sample] Apollo moon program nagivation filter demonstration

README.md

@@ -148,6 +148,7 @@ filter.update(position_x, position_y, variometer);
 - 1x1x1 constant velocity dynamic model filter of the [1-dimension position of a dog](sample/kf_1x1x1_dog_position.cpp).
 - 2x1x1 constant acceleration dynamic model filter of the [1-dimension position and velocity of a rocket altitude](sample/kf_2x1x1_rocket_altitude.cpp).
 - 8x4 constant velocity dynamic model filter of the [2-dimension position and velocity of the center, aspect ratio, and height of a bounding box](sample/kf_8x4x0_deep_sort_bounding_box.cpp).
+- [Apollo guidance, navigation, and control](sample/apollo.cpp).
 
 # Installation
 
@@ -313,6 +314,7 @@ Resources to learn about Kalman filters:
 - [How Kalman Filters Work](https://www.anuncommonlab.com/articles/how-kalman-filters-work) by Tucker McClure of An Uncommon Lab.
 - [Wikipedia Kalman filter](https://en.wikipedia.org/wiki/Kalman_filter) by Wikipedia, the free encyclopedia.
 - [Applications of Kalman Filtering in Aerospace 1960 to the Present](https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5466132) by Mohinder S. Grewal and Angus P. Andrews. IEEE 2010.
+- [R-649: The Apollo Rendezvous Navigation Filter Theory, Description and Performance, Volume 1 of 2](https://archive.org/details/R649Volume1) by Eugene S. Muller, Jr., and Peter M. Kachmar.
 
 ## Projects
 

sample/CMakeLists.txt

@@ -49,7 +49,7 @@ foreach(SAMPLE "kf_1x1x0_building_height.cpp" "kf_1x1x0_liquid_temperature.cpp"
 endforeach()
 
 foreach(SAMPLE_EIGEN
-        "ekf_4x1x0_soaring.cpp" "kf_2x1x1_rocket_altitude.cpp"
+        "apollo.cpp" "ekf_4x1x0_soaring.cpp" "kf_2x1x1_rocket_altitude.cpp"
         "kf_6x2x0_vehicle_location.cpp" "kf_8x4x0_deep_sort_bounding_box.cpp")
   get_filename_component(NAME ${SAMPLE_EIGEN} NAME_WE)
   add_executable(kalman_sample_eigen_${NAME}_driver ${SAMPLE_EIGEN})

sample/apollo.cpp

@@ -0,0 +1,20 @@
+#include "fcarouge/kalman.hpp"
+
+#include <cassert>
+
+namespace fcarouge::sample {
+namespace {
+//! @brief Estimating...
+//!
+//! @copyright This example is transcribed from R-649: The Apollo Rendezvous
+//! Navigation Filter Theory, Description and Performance, Volume 1 of 2.
+//!
+//! @see https://archive.org/details/R649Volume1
+//!
+//! @details ...
+//!
+//! @example apollo.cpp
+[[maybe_unused]] auto apollo{[] { return 0; }()};
+
+} // namespace
+} // namespace fcarouge::sample