Sunday 15 January 2012

android position estimator through GPS -



android position estimator through GPS -

i'm engineering science pupil , i'm developing quadrotor android nexus 5 flight controller.

in order perform autonomous flight need implement suitable position controller , position estimator, here question: been proven cheaper hardware possible obtain position estimation through gps , imu mesuraments battery saving policy android compute gps update @ low frequency (1hz) possible obtain higher frequency (20hz like)? if has improve solution please tell me?

edit:

my problem not how fast can prepare (before deployment can wait solid fix). issue accuracy of position estimation and, alredy sad, alredy been proven cheeper hardware (like ardupilot utilize arduino mega, same imu nexus 5 , ublox gps) possible obtain accuracy allow safe flight , precise hovering.

even requestlocationupdate() min time set 0 gps info updated 1 time every 1000ms

thanks in advance lorenzo

i think frequency mean how many times in period location updated.

if case can command somewhat. more request location updates heavier strain on battery there be. functions getlastknownlocation() , requestlocationupdates() can used in conjunction update lat/long coordinates pretty fast. read on location manager.

however gps locking take time. in experience location in open ground (no obstruction) can provided every 10secs. faster estimates can provided if have leeway in accuracy. using locations provided network towers instead of gps can location in under 10secs/location. expect atleast 200ft error magnitude @ least.

lastly fastest way update location via wifi. if can provide solid wifi connection location can update definite accuracy within 5secs.

also google maps api. have cool functionality can utilize location faster , add together google map application.

android gps position estimation

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