What is SLAM , gps vs slam??

Today I am going to be talk about SLAM so without wasting more time let's get started.

What is SLAM??

If we expand this name the full name of slam is simultaneous localization and mapping. As the word mapping means making of maps. So slam is a technology which is used to make digital maps for robots. Under this map the robot scans the area and make a digital map through this map robot understand that which thing has been present his around whatever If we talk about obstacles , road lanes , traffic lights , trees etc. 

The perfect example for this is an autonomous vehicle so how the vehicle knows that the traffic light is red or there is an another vehicle on of his front. So this whole work is done by slam. 

It works with the 2d sensors , 3d lidars , 3D High Definition LiDAR, 3D Flash LIDAR, 2D or 3D sonar sensors and one or more 2D cameras. Since 2005, there has been intense research into VSLAM (visual SLAM) using primarily visual (camera) sensors, because of the increasing ubiquity of cameras such as those in mobile devices. Visual and LIDAR sensors are informative enough to allow for landmark extraction in many cases. Other recent forms of SLAM include tactile SLAM (sensing by local touch only), radar SLAM, acoustic SLAM, and wifi-SLAM (sensing by strengths of nearby wifi access points). Recent approaches apply quasi-optical wireless  ranging for multi-lateration (RTLS) or multi-angulation in conjunction with SLAM as a tribute to erratic wireless measures. A kind of SLAM for human pedestrians uses a shoe mounted inertial measurement unit as the main sensor and relies on the fact that pedestrians are able to avoid walls to automatically build floor plans of buildings. by an indoor positioning system.

GPS VS SLAM

So can we said that the GPS and slam both are similar !no they both are not same gps is used to locate the location or gave the direction to the user to reach its destination. There is lots of limitations in gps like gps cannot work around the concrete walls , underwater . So in these cases we implement slam the accuracy of slam is better as compared to gps. So we can said the slam is better then gpu. 

So I hope you all understand the difference between SLAM and GPS. If you have any suggestion leave comments below and stay tune with us for latest tech updates. 

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