Robotics Stack Exchange
Robotics Stack Exchange

Questions tagged [navigation]

Navigation is a field of study that focuses on the process of monitoring and controlling the movement of a craft or vehicle from one place to another. Robot navigation includes exploration, mapping, localization, path planning and path execution

Navigation includes:

  • exploration: the strategy that guides the robot to select the next direction to go
  • mapping: the construction of a spatial representation by using the sensory information perceived.
  • localization: the strategy to estimate the robot position within the spatial map
  • path planning: the strategy to find a path towards a goal location being optimal or not
  • path execution: where motor actions are determined and adapted to environmental changes.
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Is there a working implementation of "Navigation Among Movable Obstacles" for a bi-pedal robot?

I would like to have a better understanding of work in the field of "Navigation Among Movable Obstacles". I started off with Michael Stilman's thesis under James Kuffner, but that has not yet sated my appetite. I am currently trying to simulate a…
Naresh
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Relative Navigation Systems

Im trying to develop a system that autonomously navigates a large outside space, where accuracy is vital (GPS is too inaccurate). There are a number of options but have largely been used inside, has anyone tried these or used anything else? WiFi…
user1949366
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VFH/VFH+ Axis Orientation & Sensor Angles

I have been struggling with trying to get the VFH+ implementation working correctly using Orca-Robotics implementation which seems to be the same implementation used in the ROS package and MATLAB and others. I would like to check on a couple of…
MikeS
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Need to clear some concepts: AHRS - Attitude - Yaw,Pitch and Roll - MARG sensors -INS

it's been while since I started reading about INS, orientation and so for quadrotors . I faced the following terms : AHRS - Attitude - Yaw,Pitch and Roll - MARG sensors I know for example how to calculate Yaw,Pitch and Roll , but does it related to…
xsari3x
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Navigation 2: Sensor origin out of map bounds. The costmap can't raytrace for it

Hi, I've been trying to get nav2 to run for quite some time and am now facing a problem. I am using foxy and the the navigation packages released via debian packages. After launching slam and the base code of my physical robot, I see a map and the…
Mk-_-
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TF_REPEATED_DATA ignoring data with redundant timestamp for frame link_left_wheel at time 618.268000 according to authority unknown_publisher

when ever i start my navigation stack i get this error Warning: TF_REPEATED_DATA ignoring data with redundant timestamp for frame link_left_wheel at time 618.268000 according to authority unknown_publisher at line 278 in…
harish556
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Applying restrictions on 360-degree LiDAR for slam and autonomous navigation

I am working with TurtleBot 3-Burger (Rasberry Pi 3) and ROS Kinetic. On Turtlebot 3, we have a 360-degree Planner LiDAR for slam and autonomous navigation. What I need/want to do is to make this scanner looking at certain angles for data…
maziarser
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Could use some guidance on how to navigate while avoiding obstacles

I have a physical robot that needs to navigate from its current location A to some point B defined by a GPS coord while avoiding all physical obstacles. The robot is equipped with a GPS of its own and has a LIDAR. Just not sure how to approach…
Auton0mous
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Steps-How to Start with Navigation Stack

Hello I have a robot that is supposed to navigate autonomously, i decided to use the navigation stack in ROS. but i feel lost ! i do not know how to start with it. i already read its tutorials but i can not understand how to apply it to my…
marawy_alsakaf
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How does global and local path finding work in ROS?

Is there some good resource about how ROS implemented global and local path finding? If I want add some extra sensors which will have the local path finding, what is the best way to do it? Thanks! Originally posted by rozoalex on ROS Answers with…
rozoalex
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Navigation stage simulation

I have a custom odometry and tf broadcasting node with me. And a map that I am able to create via running laser scans from a bag file. What I want: I got the map.pgm & map.yaml file via running gmapping slam_gmapping node and running the…
Harsh2308
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How to navigate without grids

What would be the best way to have actual navigation in free space for ROS. I mean so that the planner will not rely on a grid map. Thanks :) Originally posted by ct2034 on ROS Answers with karma: 862 on 2017-07-27 Post score: 0
Christian
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where to find the original cpp file of ROS navigation package on my computer?

I am new to ROS and I am now trying to make some modifications on the original cpp files of base_local_planner, navigation package. I can find the header files such as trajectory.h, but really have no idea about where to find the original cpp files…
jla555
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Navigation problem with COB3, DWAPlanerROS create Fail

Hi, I am trying to navigate COB3 using cob_navigation_global. Environment: Ubuntu 14.04.5, ROS-Indigo I have launched COB3 in Gazebo using cob_bringup_sim and then when I am trying to launch roslaunch cob_navigation_global 2dnav_ros_dwa.launch I…
Shaon Debnath
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ROS navigation stack with dynamic map

Hi I'm currently developing an autonomous MAV with the goal of achieving autonomous navigation and obstacle avoidance capability within an indoor environment. With an on board lidar and a downward facing camera using the google cartographer package…
eric1221bday
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