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NMEA

A cache by hoot5 Send Message to Owner Message this owner
Hidden : 2/4/2011
Difficulty:
3 out of 5
Terrain:
2.5 out of 5

Size: Size: small (small)

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Geocache Description:


SUOMEKSI:


NMEA kirjainyhdistelmä on tuttu monelle GPS-käyttäjälle. Se on lyhenne sanoista 'National Marine Electronics Association' ja tarkoittaa vapaasti suomennettuna kansallista merielektroniikkayhdistystä. Yhdistyksen on perustanut joukko elektroniikan jälleenmyyjiä, jotka New Yorkin venenäyttely toi yhteen vuonna 1957. Sen alkuperäisenä tarkoituksena oli parantaa suhteita ja yhteydenpitoa alan valmistajien kanssa. Yhteistyön tuloksena syntyi alalle oma yhtenäinen rajapinta 80-luvun alkupuolella. NMEA tarjoaa siis standardoidun rajapinnan tiedon välittämiseen ja monet GPS laitteet ovat perinteisesti tukeneet tätä tiedonsiirtotapaa. Standardissa on ASCII viestit esim. ajan, leveyspiirin, pituuspiirin ja korkeuden merenpinnasta välittämiseen. Myös monelle muulle GPS:lle tyypilliselle tiedolle on omat viestinsä.


Ratkaise kätkön todellisten koordinaattien minuuttidesimaalit alla olevista GGA viesteistä.


IN ENGLISH:


NMEA (National Marine Electronics Association) is a well known abbreviation among GPS users. The association has been founded back in the 1957 by a group of electronic dealers who got together at the New York Boat Show. The original purpose was just to strengthen relationships and improve communication with manufactures. As a result of collaboration only uniform interface was created back in the early eighties. NMEA provides a standard for digital data exchange between different products and is supported by many GPS devices. There are standard ASCII messages to deliver e.g. time, latitude, longitude and altitude information, but also wide range of other GPS specific information.


Extract true coordinate minute decimals of the cache from GGA messages below.


$GPGGA,123456,6128.48500,N,02343.73500,E,3,00,0.92,70.58,M,20.42,M,,*41
$GPGGA,123503,6128.48499,N,02343.73721,E,3,00,0.92,70.58,M,20.42,M,,*40
$GPGGA,123518,6128.48392,N,02343.73724,E,3,00,0.92,70.58,M,20.42,M,,*43
$GPGGA,123536,6128.48395,N,02343.73498,E,3,00,0.92,70.58,M,20.42,M,,*4C
$GPGGA,123552,6128.48608,N,02343.73508,E,3,00,0.92,70.58,M,20.42,M,,*47
$GPGGA,123601,6128.48607,N,02343.73945,E,3,00,0.92,70.58,M,20.42,M,,*48
$GPGGA,123618,6128.48499,N,02343.73956,E,3,00,0.92,70.58,M,20.42,M,,*47
$GPGGA,123631,6128.48497,N,02343.74178,E,3,00,0.92,70.58,M,20.42,M,,*41
$GPGGA,123642,6128.48392,N,02343.74180,E,3,00,0.92,70.58,M,20.42,M,,*40
$GPGGA,123657,6128.48390,N,02343.73958,E,3,00,0.92,70.58,M,20.42,M,,*4C
$GPGGA,123717,6128.48606,N,02343.73960,E,3,00,0.92,70.58,M,20.42,M,,*48
$GPGGA,123730,6128.48604,N,02343.74403,E,3,00,0.92,70.58,M,20.42,M,,*40
$GPGGA,123743,6128.48498,N,02343.74409,E,3,00,0.92,70.58,M,20.42,M,,*49
$GPGGA,123800,6128.48500,N,02343.74612,E,3,00,0.92,70.58,M,20.42,M,,*49
$GPGGA,123819,6128.48605,N,02343.74630,E,3,00,0.92,70.58,M,20.42,M,,*47
$GPGGA,123843,6128.48067,N,02343.74630,E,3,00,0.92,70.58,M,20.42,M,,*4A
$GPGGA,123859,6128.48070,N,02343.74406,E,3,00,0.92,70.58,M,20.42,M,,*40
$GPGGA,123913,6128.48282,N,02343.74412,E,3,00,0.92,70.58,M,20.42,M,,*45
$GPGGA,123922,6128.48283,N,02343.74627,E,3,00,0.92,70.58,M,20.42,M,,*42
$GPGGA,124004,6128.48282,N,02343.73961,E,3,00,0.92,70.58,M,20.42,M,,*43
$GPGGA,124013,6128.48283,N,02343.74176,E,3,00,0.92,70.58,M,20.42,M,,*4D
$GPGGA,124029,6128.48175,N,02343.74182,E,3,00,0.92,70.58,M,20.42,M,,*45
$GPGGA,124041,6128.48173,N,02343.73963,E,3,00,0.92,70.58,M,20.42,M,,*4D
$GPGGA,124054,6128.48068,N,02343.73956,E,3,00,0.92,70.58,M,20.42,M,,*44
$GPGGA,124110,6128.48063,N,02343.74180,E,3,00,0.92,70.58,M,20.42,M,,*4A
$GPGGA,124142,6128.48057,N,02343.73506,E,3,00,0.92,70.58,M,20.42,M,,*47
$GPGGA,124149,6128.48159,N,02343.73506,E,3,00,0.92,70.58,M,20.42,M,,*43
$GPGGA,124203,6128.48162,N,02343.73727,E,3,00,0.92,70.58,M,20.42,M,,*47
$GPGGA,124221,6128.48054,N,02343.73729,E,3,00,0.92,70.58,M,20.42,M,,*4D
$GPGGA,124235,6128.48056,N,02343.73507,E,3,00,0.92,70.58,M,20.42,M,,*44
$GPGGA,124254,6128.48281,N,02343.73517,E,3,00,0.92,70.58,M,20.42,M,,*4A
$GPGGA,124300,6128.48281,N,02343.73732,E,3,00,0.92,70.58,M,20.42,M,,*4F


**********************************************************

PÄIVITYS/UPDATE 28.7.2017

Lue tämä!
Kätköä on siirretty 5m kaakkoon alkuperäisestä paikasta. Käytä alkuperäisiä koordinaatteja checkerissä, älä tee 5m korjausta kun syötät niitä checkeriin. Uudet koordinaatit saa checkeristä, tai käytä alkuperäisiä koordinaatteja ja tee 5m korjaus itse.

Please read this!
Cache has moved 5m to SE from the original place. Don't do 5m adjustment to coordinates when entering them to checker but use original coordinates instead. New updated coordinates can be get from checker. Alternatively use original coordinates and and do 5m correction yourself.


Additional Hints (Decrypt)

[FI]: Xvira nyyn
[EN]: Haqre gur ebpx

Decryption Key

A|B|C|D|E|F|G|H|I|J|K|L|M
-------------------------
N|O|P|Q|R|S|T|U|V|W|X|Y|Z

(letter above equals below, and vice versa)



 

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Coordinates are in the WGS84 datum

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