Mobile Crossing WayPoint Map Loader Návod k obsluze stáhnout pdf (Strana 31)

SeaMarks manual V. Additional Information •

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If you still have trouble with conversion of your files, a conversion service is available at low cost. Several import

routines have been developed for special file organizations, so we should be able to easily convert your database into the

right form by using one of these programs. E-mail or call for information.

5. Where Did the Formulas come from?

The program uses computational algorithms derived from a program written for the Navy by A. C. Campbell of the

Geodesy Division of the Hydrographic Surveys Department, Naval Oceanographic Office in 1962. The program used an

inverse routine for hyperbolic navigation developed by Emanuel Sodano. The program performs hyperbolic

trigonometric calculations on an oblate spheroid based on the WGS-84 measurements of the Earth's size and shape. The

Campbell algorithms are those used by the Defense Mapping Agency and NOAA. This conversion routine requires an

estimate of the initial geographic position (Center Lat/Lon) for Loran to geographic conversion. The estimate should be

within about 50 miles of the points converted, to insure converging on the right solution as the Loran lines can cross in 2

places. Where two solutions exist nearby, as is the case near the Loran stations, the equations may not reach a solution

and will return an answer of zero. This will require that the center Lat/Lon be set even closer to the right solution.

NOAA has a free program called POSAID on their web site that uses the same formulas as this program. It is a DOS

command line program and not very convenient to use and does not have ASFs built in.

In order for the program to compute the LAT/LON of a given Loran waypoint, the position of the Loran stations must be

known. This data is contained in a file that is accessed through the User Preferences routine. It selects those needed

for your choice of Loran chains. The file contains all stations reported to the author by the US Coast Guard and

Megapulse Inc. which includes all old A and C stations as well as stations in foreign countries. For the US, loran

stations are currently out of service.

6. Register Your Copy

Thank you for buying the SeaMarks program, we hope you enjoy working with it. If the program’s opening screen has

your name and address in it, you are registered with us. Otherwise simply write down the information on who you are

and where you bought it and send it by regular mail (or e-mail it to sales@andren.com). The information we need is

name, address, email address, and phone number, where you bought it and the serial number that is on the opening

screen.

Registering will insure that you are notified of any updates or problems found. Upgrades will be available at a nominal

price to registered users. Notices can only be sent to users we have addresses for, so let us know where you are, and

keep in touch when you move.

An Internet WEB site is available at: http://www.andren.com. The web site will have the latest information on the

program as well as news on updates as appropriate. Download-able free updates for bug fixes and minor changes are

also available on the web site under program support. Generally you are entitled to free updates for 2 years after

purchasing the program. You can easily check for updates via: Help>Check for Updates.

7. Tips and Tricks

Since the program added three new fields in version 7.0 and another in version 8.0, you may need to fill them if you are

upgrading. To fill the name field, there is a selection: Tools>Swap/Fill Fields. This allows you to specify how you

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Mobile Crossing WayPoint Map Loader Návod k obsluze Strana 31