2 votes

What's the difference between a sonar and ultrasonic sensor?

Sonar, as used in robotics means having an ultrasonic emitter and and ultrasonic receiver. There are also some sonar with a single emitter/receiver. However, they all use ultrasonic sound waves to ...
NomadMaker's user avatar
2 votes
Accepted

Quadcopter PID Tuning for Altitude Hold/Position Hold along Z axis

Currently I am performing my research on that, and in my case I decided to tune all the PIDs. Angles of the quadrotor tend to zero, while altitude controller tend to the objective height. That's ...
galtor's user avatar
  • 470
2 votes

What's the difference between a sonar and ultrasonic sensor?

Ultrasonic means above audible range, Sonar may be within the audible range In my opinion the ultrasonic being more precise also may come with higher price.
Nagesh M R's user avatar
1 vote

Convert sonar scans to Lidar scan file

Assuming you mean a LaserScan ROS message. It's possible to use the geometry of your robot and laser positions to create one ray per sensor in the laser scan. This is basically going to be a manual ...
Tully's user avatar
  • 25k
1 vote

What's the difference between a sonar and ultrasonic sensor?

In terms of functionality, an ultrasonic sensor performs a single distance measurement in a given direction (strictly speaking, such a sensor emits a sound cone, the angle of which depends on how the ...
Optmly's user avatar
  • 11
1 vote

What's the difference between a sonar and ultrasonic sensor?

The main difference is, SONAR (originally an acronym for SOund Navigation And Ranging) is used underwater and uses low frequency sounds (100-500Hz) as well as high frequency sounds (ultrasound, etc). ...
lenik's user avatar
  • 238
1 vote
Accepted

Dynamically detect changing obstacles

Having an overhead camera (like a single low cost webcam if needed). Ultrasonics is meant to be directional while cameras are not meant to be. The downward facing camera placed at a height and ...
Prasad Raghavendra's user avatar

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