[Paparazzi-devel] antenna track code

[afishindouban]

Dear All

 

I am fresh to read into the code and make some test, in antenna track code, I get some confuse.

In this function, on_NAV_STATUS(IvyClientPtr app, void *user_data, int argc, char *argv[]), calculate ant_elev.

ant_elev = atan2( (gps_alt-home_alt), sqrt(atof(argv[5])) ) * 180. / M_PI;

 

what is Argv[5]? sqrt(atof(argv[5])) = distance from launch point to the nav point ? it should equal to sqrt(sqr(gps_pos_x) + sqr (gps_pos_y)), am I right ?

by the trace of the message, I think I am wrong. someone can give me some tips ?

 

Thank you so much.

 

Kevin.