Here, this video should help show what realsense does. First, when realsense is turned on and you fly towards an object you just keep the right stick forward. The realsense will move the Typhoon up/down/left/right to avoid the objects in front. There is a memory module onboard which records 30 seconds of flight data from the realsense module. So I am guessing this links in with the GPS coordinates so that everything the realsense sees for the past 30 seconds is mapped to GPS coordinates. This means that if you suddenly fly backwards after flying through obstacles, it should remember the past 30 seconds worth of obstacles in the rear and avoid them (pretty cool).
Also, the IPS module will not allow you to land without putting the landing gear down. If you try and land without the landing gear down, it will just hover.
Also, the IPS module will not allow you to land without putting the landing gear down. If you try and land without the landing gear down, it will just hover.