Is this GPS receiver can be use for other thing, like perimeter survey or something else than use it for find location to one place from another.

GPS tells you where you are in coordinates, by capturing GPS satellite signals and then plot the coordinates on the maps you have, so you need maps to know where you are. From there the softwares are capable of routing, telling you how to get to a place from another through roads on the map, and you can choose faster time or shorter distance. Works best with constantly updated maps.

GPS depends a lot on accuracy, meaning satellite signals AND accuracy of the maps in use. The best GPS signal can provide up to 3 meters radius, it may or may not be sufficient for the uses you mentioned.

GPS is used for both mapping (finding how to get from point A to point B) and perimeter and land surveying.

The thing is, our current GPS that we buy all those, even stand alone receivers, have an accuracy of 5 meters or 3 meters. That means your location might be off by 3-5 meters.

For land surverying, u need almost pin point accuracy. So u need a much much more powerful GPS unit, which is superbly expensive. I dun know about that, since that's more of a profession thing.
However, if u use Qarmin Que with Malsing maps, the program can show u your current speed, distance traveled etc. So that can help a bit. But dun expect it to me 100 percent accurate. i would say about 70-80 percent accuracy only.

GPS can provide you coordinate... The rest of the features all depends of software you are using. Since u can plot the route u drive, you could calc the perimeter, area, etc (its all methematically solutions, u can even calc it manually)

my accuracy Dopod p100 stated 5 meteres.

some people sell product together with map. But most of the time (not all the time la, but i think most) the software is "cracked" or "ahem" version. So not up to date, especially MapKing. Best is use malsing maps. free and up to date

goto www.malsingmaps.com and read the wiki

You can order it from

http://www.skybees.com.my/webshaper/store/...roductItem=1414

Bout the accuracy, I would like to rectify my earlier statement bout the accuracy of my GPS unit.  The stated accuracy for mine (16CH) is <7m (Non DGPS) and <1m (DGPS)

I attach herewith the tech spec of my product.

[attachmentid=175041]

im using 818 pro and have order holux gps.
what do i need to install now? pls help.

Hmmm, i had better go to LYP for a first-hand look first... Check out those shops given in the earlier post above and then compare the prices...

As mentioned earlier the best so far are those able to run the free Malsingmaps which r updated monthly. And this free maps can only be runed (currently) using the following software:

1) Garmin (For standalone GPSr) + Garmin car navigation h/ware such as Nuvi & Streetpilot
2) Garmin Que + GPS proxy/Gate (For all PPC wth WMS2003/2005 & certain Palm)
3) Mapking G10.2 (1115) - (The maps will not work on V7 & R12)
4) Symbian phone such as N70 or higher but no auto routing - Someone hv just converted whole malsinmaps to symbian format recently  )

So for car navigation get those PPC wth atleast 320X240 screen and able to view horizontal....such as HP5770....or if u r loaded get those Nuvi & streetpilots which is atleast RM3K++

For 3D definitely Mapking G10.2 ....but this is not a free software. U need to buy the license to enable viewing of the free maps from malsingmaps..For free software download Garmin Que & GPS Proxy (But it will be a very lenghty & frustrating setup for 1st timer....I got my Garmin & GPS proxy running correctly after 3 failed attempts...the worst diff GPSr & diff PDA model having diff com ports settings...