E
Erik
Anyone have a good example of how to connect my GPS(BT) to my pocketpcusing
c#?
Erik
c#?
Erik
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T
thadgg
6/28/2005 3:33:08 PM Re: Advice on GPS coordinates received
Make a mixture of both:
Add more weight to the latest coordinates, to gain accuracy for high
speed moving, but also multyply with the quality. Yuo should add 3
switches for testing purposes:
- number of signals (seconds) taken into account
- exp - parameter (range factors from (exp(0)==1 to exp(parameter))
- weighting of signal strength:
// assuming you have such a class:
class Point
{
public:
Point(double, double, double);
Point& operator += (const Point&);
Point operator *(double);
};
// Here's how to get a such a point from number of measured points
Point GetCoo(Point* signal_point, double* signal_strength,
int num_signals,
double exp_parameter,
double sig_weight/* [0; 1] */
)
{
Point res;
double fac, sumdiv=0;
double maxexp = exp(exp_parameter); // your exp part can't go bigger
than this
for(int i=0; i<num_signals; ++i)
{
// exp-part for 'i' - range [0; 1]
fac= exp(exp_parameter * (i / (num_signals+1)) )
/ maxexp;
// signal weight part
fac*= (1-sig_weight);
fac += sig_weight * signal_strength;
sumdiv+=fav;
// For res.x, .y, .z do:
res += (signal_point * fav);
}
return res;
}
not tested, should work though,
Gernot
No. Anyone else?
see
http://www.eggheadcafe.com/ng/microsoft.public.pocketpc.developer/post22527468.asp
hope it helps?
http://www.sworde.com
http://www.sworde.blogspot.com/
Make a mixture of both:
Add more weight to the latest coordinates, to gain accuracy for high
speed moving, but also multyply with the quality. Yuo should add 3
switches for testing purposes:
- number of signals (seconds) taken into account
- exp - parameter (range factors from (exp(0)==1 to exp(parameter))
- weighting of signal strength:
// assuming you have such a class:
class Point
{
public:
Point(double, double, double);
Point& operator += (const Point&);
Point operator *(double);
};
// Here's how to get a such a point from number of measured points
Point GetCoo(Point* signal_point, double* signal_strength,
int num_signals,
double exp_parameter,
double sig_weight/* [0; 1] */
)
{
Point res;
double fac, sumdiv=0;
double maxexp = exp(exp_parameter); // your exp part can't go bigger
than this
for(int i=0; i<num_signals; ++i)
{
// exp-part for 'i' - range [0; 1]
fac= exp(exp_parameter * (i / (num_signals+1)) )
/ maxexp;
// signal weight part
fac*= (1-sig_weight);
fac += sig_weight * signal_strength;
sumdiv+=fav;
// For res.x, .y, .z do:
res += (signal_point * fav);
}
return res;
}
not tested, should work though,
Gernot
No. Anyone else?
see
http://www.eggheadcafe.com/ng/microsoft.public.pocketpc.developer/post22527468.asp
hope it helps?
http://www.sworde.com
http://www.sworde.blogspot.com/
E
Erik
Thank you, but what I was looking for was an example on how to connect the
GPS on COM6 as an example.
Erik
GPS on COM6 as an example.
Erik
T
Trapulo
look at opennetcf sources
Erik said:Thank you, but what I was looking for was an example on how to connect the
GPS on COM6 as an example.
Erik
6/28/2005 3:33:08 PM Re: Advice on GPS coordinates received
Make a mixture of both:
Add more weight to the latest coordinates, to gain accuracy for high
speed moving, but also multyply with the quality. Yuo should add 3
switches for testing purposes:
- number of signals (seconds) taken into account
- exp - parameter (range factors from (exp(0)==1 to exp(parameter))
- weighting of signal strength:
// assuming you have such a class:
class Point
{
public:
Point(double, double, double);
Point& operator += (const Point&);
Point operator *(double);
};
// Here's how to get a such a point from number of measured points
Point GetCoo(Point* signal_point, double* signal_strength,
int num_signals,
double exp_parameter,
double sig_weight/* [0; 1] */
)
{
Point res;
double fac, sumdiv=0;
double maxexp = exp(exp_parameter); // your exp part can't go bigger
than this
for(int i=0; i<num_signals; ++i)
{
// exp-part for 'i' - range [0; 1]
fac= exp(exp_parameter * (i / (num_signals+1)) )
/ maxexp;
// signal weight part
fac*= (1-sig_weight);
fac += sig_weight * signal_strength;
sumdiv+=fav;
// For res.x, .y, .z do:
res += (signal_point * fav);
}
return res;
}
not tested, should work though,
Gernot
No. Anyone else?
see
http://www.eggheadcafe.com/ng/microsoft.public.pocketpc.developer/post22527468.asp
hope it helps?
http://www.sworde.com
http://www.sworde.blogspot.com/