GPS CO ORDS

 HI can someone please explain putting GPS Co ordinates gps has hour000 minute 00 seconds000 what do you put when seconds has been given to you with a decimal point example 114 20 15.5

 


sea-kem's picture

Posts: 13492

Date Joined: 30/11/09

 Get rid of the decimal.

Tue, 2021-07-06 07:38

 Get rid of the decimal.

____________________________________________________________________________

Love the West!

Posts: 15

Date Joined: 17/01/16

Thats it

Tue, 2021-07-06 07:59

 Thats it ? no worries thankyou

Posts: 15

Date Joined: 17/01/16

Thats it

Tue, 2021-07-06 07:59

 Thats it ? no worries thankyou

dmck's picture

Posts: 284

Date Joined: 07/03/19

Round up/down..

Tue, 2021-07-06 08:42

 

to the nearest whole number.

Maximum error will be 15 metres

 

OR   if your GPS will do MM.mmm (decimal minutes to 3 decimal places) you can convert SS.s to .mmm by dividing by 60

maximun error 2metres. 

If your GPS will only do 2 decimal places (.mm) max error = 18 metres.

Posts: 70

Date Joined: 03/08/19

Sound around a little

Tue, 2021-07-06 10:46

Round up/down, but if you need to find a very small target, like a 2m diameter bommie, then just sound around  in a spiral from the GPSmark to cover a 50X50m patch. Current GPS is nominally only accurate to 5-10m anyway, although Geoscience Australia is working on a satellite-based system that should give us centimeter accuracy soon.

Brody's picture

Posts: 984

Date Joined: 06/02/07

 I think you have been

Tue, 2021-07-06 12:10

 I think you have been provided with the numbers in degrees minutes seconds format and you'll need to convert to degrees decimal minutes format.

 

Try this link to convert www.pgc.umn.edu/apps/convert/

dmck's picture

Posts: 284

Date Joined: 07/03/19

All you need is a simple calculator...

Tue, 2021-07-06 15:22

 Degrees dont change DDD

Minutes dont change. MM

 

Divide Seconds by 60... gives a 0.mmm answer...  {do it in your head... divide by 10 then by 6...}

eg 45 seconds,  /10= 4.5    /6= 0.75    and isnt 45 seconds = 0.75 of a minute?}

Add this to the Minutes   MM + 0.mmm = MM.mmm

 

 You have probably been converting (time) seconds in to minutes and minutes in to hours for most of your life....... this is identical

if you have a lot to do. use a spreadsheet.

Posts: 271

Date Joined: 28/05/15

 As above divide the seconds

Tue, 2021-07-06 14:26

 As above divide the seconds by 60.

 

you have DMS and and you want to convert to DDM, divide DMS seconds by 60 yo give you the percentage of a minute which makes up the last portion of the DDM format .000

 

15 seconds = .250

30 seconds = .500

45 seconds = .750

 

 

Posts: 70

Date Joined: 03/08/19

Computer makes it easy

Tue, 2021-07-06 18:15

If you have a computer and internet then there are heaps of conversion programs too, which can help if you have time for a bit of planning at home. A simple to use one is here. 

https://www.pgc.umn.edu/apps/convert/

 

It shows the three most common format types,  all in a line for latitude and longitude, so when you type a coordinate in  the box for the format you have, it automatically shows it in the other formats. As soon as you change the location coordinates all the others change .