how to properly interpolate windows phone gps points to get maximum accuracy?
im trying to calculate speed out of two sequenteal readings : (distance / time). after the first i have tried i noticed that my results are way too scattered. so after some reading i understood that i need to take the average between few readings so i decided to accumulate for 3 seconds all incoming readings and then sum the entire distance and device it by time. this time i managed to receive a "better looking" results but unfortunately the results were lower than expected. if for example while running the current speed should have been 7-10Km/h it appeared as 3, and while driving at 60-70 km/h it appeared as 14.During my research i've encodered few methods that require me to interpolate my results between each calculating cycle (lets say 3 seconds and so) but i couldn't understand what each variable in the equation says.
for example : `C = A0 + A1T + A2T^2 + A3T^3` , and the other one :  
`C = A0 + A1sin(WT) + A2Cos(WT) + A3Sin(2WT)...`
i would like to get some information about these equation and how to use them.  
thanks alot!
how to properly interpolate windows phone gps points to get maximum accuracy?
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im trying to calculate speed out of two sequenteal readings : (distance / time). after the first i have tried i noticed that my results are way too scattered. so after some reading i understood that i need to take the average between few readings so i decided to accumulate for 3 seconds all incoming readings and then sum the entire distance and device it by time. this time i managed to receive a "better looking" results but unfortunately the results were lower than expected. if for example while running the current speed should have been 7-10Km/h it appeared as 3, and while driving at 60-70 km/h it appeared as 14.During my research i've encodered few methods that require me to interpolate my results between each calculating cycle (lets say 3 seconds and so) but i couldn't understand what each variable in the equation says.
for example : `C = A0 + A1T + A2T^2 + A3T^3` , and the other one :  
`C = A0 + A1sin(WT) + A2Cos(WT) + A3Sin(2WT)...`
i would like to get some information about these equation and how to use them.  
thanks alot!