Corners Finding

Posted in Reproduction Vintage Jewelry on 03/23/2006 07:37 am by admin

Corners Finding
I need to find my property corners that I have the latitude and longitude, but I do not know what type of GPS to buy?

What type of GPS Can I make the latitude and longitude to find the corners?

Pamela, you need precision, but all GPS receivers use the same system and they do not differ in their accuracy. You can expect an accuracy of about 4 meters in latitude, longitude and about 100 meters. Until 1999, GPS has something called Selective Availability (SA) has degraded accuracy goal. But it is now removed. The aim of SA is to give NATO an edge in the accuracy of their military, the "bad boys' and civilians. When you read a GPS you must remember that the latitude and longitude in WGS84 format. This is important because there are many different coordinate systems of reference. In places, the WGS84 may be different from other systems may be 100 or even 200 meters. This is why all charts are now within the margin of the correction necessary to read the WGS84. The question is: Do you need to know an absolute or relative position? The complete report is at the equator position (for latitude) and the Greenwich meridian (the longitude). The relative position is only distance in Cartesian or polar notation to a baseline that is yours. If it does not bother you with WGS84 and other references. You just want to know how a place is different, using the same instrument. In any case, a GPS system will work for you. You buy what is called a Winter Carnival or PND (Personal Navigation Device) for Garmin, TomTom, Mio, Navman, etc. very cheap. Then, you can also use in your car. If you want to get the best result, you must take several samples and averaged. I worked and used all kinds of navigation instruments for nearly half a century sextant, RDF, Decca, Omega, Loran-C, Transit Satellite (GPS ancestor) and, of course, the GPS since 1993. I wrote my own application to read and plot GPS in the early days and that was very interesting then that most of the time the data were in a circle precisely, it has sometimes blown away to return to a better position. It is then just a matter of filter for best accuracy. If you draw say 5 or 6 sets of position, you can find the median filter or simply the "Far-out data. Good Luck with your project.

GO – Gus & Olivia: I’m Onto Your Game! – GL- Jan. 24, 2008