NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Can I Navigate Without an Assumed Position?
From: Stan K
Date: 2017 Sep 12, 17:52 -0400
From: Stan K
Date: 2017 Sep 12, 17:52 -0400
Hello, Hien. Long time.
For those of you who might not remember, Hien is the developer of the Android app StarStruck Navigation, a bargain at $2.99.
Stan
-----Original Message-----
From: Hien Thanh Nguyen <NoReply_Nguyen@fer3.com>
To: slk1000 <slk1000@aol.com>
Sent: Tue, Sep 12, 2017 5:25 pm
Subject: [NavList] Re: Can I Navigate Without an Assumed Position?
From: Hien Thanh Nguyen <NoReply_Nguyen@fer3.com>
To: slk1000 <slk1000@aol.com>
Sent: Tue, Sep 12, 2017 5:25 pm
Subject: [NavList] Re: Can I Navigate Without an Assumed Position?
Hi Yves,
Your proposal sounds very interesting. Would you be able to share your paper/algorithm with us? I am also thinking of a method for finding a fix without the use of the AP location. It would be nice to have a method like yours to serve as a reference.
Thanks,
Hien
On Wed, Aug 30, 2017 at 5:38 AM, Robin Jouan <NoReply_RobinJouan@fer3.com> wrote:
Just a remark : Generally, 3D matrix methods can spare any assumed or arbitrary position as an input. The reason is they are not based on a differential formulation, but on a global formulation.With my own method ("Coplanar Vertices Method") the assumed position is used only to find its distance to the computed solution at the end of the process.In fact what you need is only a sextant and a small computer: a palm PC or a smartphone can do the job, as well as a few "old" TI or HP devices (HP200XL is a famous one).Best RegardsYves
