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[Paparazzi-devel] antenna track code

From: afishindouban
Subject: [Paparazzi-devel] antenna track code
Date: Mon, 21 Oct 2013 00:29:37 -0500

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.


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