On Mon, 2010-06-28 at 10:26 -0700, B J wrote:
--- On Mon, 6/28/10, Reid Crowe reid.crowe@gmail.com wrote:
From: Reid Crowe reid.crowe@gmail.com Subject: [amsat-bb] Pass prediction algorithm To: amsat-bb@amsat.org Received: Monday, June 28, 2010, 8:59 AM I'm trying to write my own pass prediction program for tracking FM satellites. This program will this notify the users of upcoming passes via APRS messaging. I would like to find an algorithm that will predict AOS/LOS time and azimuth and the maximum elevation. I'm also hoping this algorithm will not be too computationally intensive as it may possibly be used for hundreds of different station locations.
Can anyone help?
I would suggest you look at the digi_ned source code. It works great and does everything you want. There was a change on the last update where he replace the display of azimuth/elevation to HIGH(over 30 degrees) and LOW (Below 30 degrees). That change actually works very well when driving down the road. But it was nice to see the actually numbers when sitting still. The code before this last update did that.
73 kim - ac7yy