I am looking for a good gps android app for doing boundary retracement.  Locate a position on first found corner and then enter direction and distance to establish waypoints to navigate through the woods.

 

This Content Originally Published by a land surveyor to Land Surveyors United Network

Views: 541

See Your Saved Posts Timeline

☇ Reply to this

Replies to This Discussion

Hi John,
I'd be interested to know what accuracy you are expecting.... There's going to be quite a bit of multipath in woodland (even if you get a fix). Not quite what you are after but Trimble Geo 7X could be another option.
Kind regards
Paul

I am not planning on producing a boundary survey. It is only for finding monumentation and reference trees on the side of a mountain. 

Dear friend,

Please use any suitable app, if you are looking for accuracy. the difference as per actuals may vary by even some metres.

Regards

A Murali babu

If you use a data collector that has an integrated gps (L1), you can use your data collection program to do that. Store the known property corner you found, and translate/rotate calculated property corners over that, and use the stake out function to get you close for recon. I run boundary retracements the same way while traversing, but if your just doing recon or trying to get close I think that would work fine.

I hope you are just using that to get in the general vicinity to search for monuments. You can do that with about any hand held GPS, or a compass & tape. I think I'm going to get ill if I hear "app" one more time. Technology is great but today's generation can't pour a cup of coffee without a app stuck somewhere the sun doesn't shine.

That reminds me of the two old farts sitting on a park bench. One says to the other, "Sir, did you know you have a suppository in your ear?" The reply was, "Never mind that, where did I put my hearing aid?"  

I am not planning on producing a boundary survey. It is only for finding monuments and reference trees on the side of a mountain for the AT trail monitor program. My pacing is pretty tight in the flat lands but is quite sloppy hopping over brush on the side of a mountain. My hand held GPS is starting to fail I figure if the cell phone has a GPS use it, the down side is cell phone battery probably won't last all day.

Thank you for the input.

Just remember, a computer's attention span is only as long as it's power cord.

if its a recent survey by the National Forest then they can be easy to find with 3 very well marked witness trees... what state are you stationed in?

I feel ya Charlie on the app thing... My insurance agent thinks you only need a cell phone to survey land... I will give Google maps credit... it seems to be well within 20 foot accurate... I was amazed to be very far out and had decent cell coverage when i stepped up to a dock on a pond and the blue icon was floating correctly on their aerial image...

John,

I'm with Charlie on this one ... apps aren't (yet) the answer to everything.

The solution here pivots on GPS accuracy. Any app will be leveraging the GPS inside your phone which will be similar to your handheld GPS but the handheld (use Garmin) is a dedicated tool for doing exactly what you are trying to do (within certain accuracies) and like you indicated, will last all day and more importantly will not require a cell connection .. ie just because you can see yourself on an image in any app you may find, doesn't mean that you are actually at that spot. A newer handheld Garmin GPS will have the benefit of being able to leverage more satellites and WAAS which typically will give you more reliable accuracy. 

It sounds to me that you don't have access to GIS/GNSS (sub yard) like the Trimble suggested previously or Survey grade (sub inch) GPS units so that would mean I'd suggest a newer handheld Garmin GPS and expect accuracy along a line to be within a couple yards of the line. If you need better accuracy, you need better gear ... and someone who knows how to run it along with the knowledge of the things that can go wrong.

Assuming only what you've told us so far: Next is to know where the line you are trying to follow actually is. I'm Canadian but I believe that what I'm going to tell you is universal: "the pins in the ground govern" so find the pins (monuments) and get as good of a GPS location on them as possible ... your GPS will have an averaging capability, use it. (There's another way that I use that saves a lot of time but I won't explain that here). You want the line as accurate as possible as you will be varying a couple yards from that remember. Stand on one of the monuments and navigate to the other. There is a function in the GPS that allows you to set on the map screen that will show you how far off of that straight line "cross track error" I believe that this function has different names in different vintages of GPS ... this also allows you to weave your trail around in the bush and check proximity to that line once in a while. If you are a computer guy: Another way to draw the line is to create waypoints at the monuments and put them into MapSource or BaseCamp (Garmin software) and transfer the line to your GPS.

So ... too much information?

A realestate agent I work for quite often that deals primarily with rural acreage has one of those apps. It usually will get you close enough where you can see a corner if it is visible. I once used a loran to navigate my boat. I now have a commercial grade gps but it isn't any better than loran. It is much more user friendly. None of the above were intended to produce survey grade results but they generally do what they were designed to do. The trouble with a GPS signal in the woods, except maybe if you are working with RTK from a good BASE, is you can never be sure how good your results are. Even then it's very problematic. I still recall my "Horror Story" experience with the engineer that thought he (mostly me) could survey 28,000 acres of swamp & alligators with numerous out parcels in a couple weeks with a GPS. A large portion of it was only accessible in a drought. There were plenty of cotton mouth water moccasins & beavers. Never did see any wild hogs while surveying but you could hear them & they weren't very far away & you could see where the big boars had debarked the base of trees with their tusks. Did see a few along side of the road while driving.

Everyone has the classic horror story.  I had one manager that decided we could do boundary, trees and topo, on a wooded parcel at the rate of 15 acres a day.  I told him I could get all 60 acres done before lunch tomorrow.

I hope he didn't bid the job thinking it could be done in 4 days. And then 4 weeks later we had trees and topo lines on the map.  I could only imagine how many trees and how steep the property was.  Did you punch him?

RSS

Where Thousands of Professional Land Surveyors, Students of Surveying and Educators are United through Collaborative Knowledge and Purpose.

Dedicated to the Memory of Skip Farrow (1953-2015)

+ Surveyor Sharer

Drag Button to bookmark bar and view submitted links here.Will soon be moved to a directory

AFGHANISTAN SURVEYORS ALBANIA SURVEYORS ALGERIA SURVEYORS AMERICAN SAMOA SURVEYORS ANDORRA SURVEYORS
ANGOLA SURVEYORS ANGUILLA SURVEYORS ANTIGUA & BARBUDA SURVEYORS ARGENTINA SURVEYORS ARMENIA SURVEYORS
ARUBA SURVEYORS AUSTRALIA SURVEYORS AUSTRIA SURVEYORS AZERBAIJAN SURVEYORS BAHAMAS SURVEYORS
BAHRAIN SURVEYORS BANGLADESH SURVEYORS BARBADOS SURVEYORS BELARUS SURVEYORS BELGIUM SURVEYORS
BELIZE SURVEYORS BENIN SURVEYORS BERMUDA SURVEYORS BHUTAN SURVEYORS BOLIVIA SURVEYORS
BOSNIA & HERZEGOWINA SURVEYORS BOTSWANA SURVEYORS BRAZIL SURVEYORS BRITISH INDIAN OCEAN TERRITORY SURVEYORS
BRUNEI DARUSSALAM SURVEYORS BULGARIA SURVEYORS BURKINA FASO SURVEYORS BURUNDI SURVEYORS CAMBODIA SURVEYORS
CAMEROON SURVEYORS CANADA SURVEYORS CAPE VERDE SURVEYORS CAYMAN ISLANDS SURVEYORS CENTRAL AFRICAN REPUBLIC SURVEYORS
CHAD SURVEYORS CHILE SURVEYORS CHINA SURVEYORS COLOMBIA SURVEYORS COMOROS SURVEYORS
CONGO SURVEYORS DEMOCRATIC REPUBLIC OF THE CONGO SURVEYORS COOK ISLANDS SURVEYORS COSTA RICA SURVEYORS COTE D'IVOIRE SURVEYORS
CROATIA SURVEYORS CUBA SURVEYORS CURACAO SURVEYORS CYPRUS SURVEYORS CZECH REPUBLIC SURVEYORS
DENMARK SURVEYORS DJIBOUTI SURVEYORS DOMINICA SURVEYORS DOMINICAN REPUBLIC SURVEYORS ECUADOR SURVEYORS
EGYPT SURVEYORS EL SALVADOR SURVEYORS EQUATORIAL GUINEA SURVEYORS ERITREA SURVEYORS ESTONIA SURVEYORS
ETHIOPIA SURVEYORS EUROPEAN UNION SURVEYORS FAROE ISLANDS SURVEYORS FIJI SURVEYORS FINLAND SURVEYORS
FRANCE SURVEYORS FRENCH GUIANA SURVEYORS FRENCH POLYNESIA SURVEYORS GABON SURVEYORS GAMBIA SURVEYORS
GEORGIA SURVEYORS GERMANY SURVEYORS GHANA SURVEYORS GIBRALTAR SURVEYORS GREECE SURVEYORS
GREENLAND SURVEYORS GRENADA SURVEYORS GUADELOUPE SURVEYORS GUAM SURVEYORS GUATEMALA SURVEYORS
GUERNSEY SURVEYORS GUINEA SURVEYORS GUINEA-BISSAU SURVEYORS GUYANA SURVEYORS HAITI SURVEYORS
HOLY SEE SURVEYORS HONDURAS SURVEYORS HONG KONG SURVEYORS HUNGARY SURVEYORS ICELAND SURVEYORS
INDIA SURVEYORS INDONESIA SURVEYORS IRAN SURVEYORS IRAQ SURVEYORS IRELAND SURVEYORS
ISLE OF MAN SURVEYORS ISRAEL SURVEYORS ITALY SURVEYORS JAMAICA SURVEYORS JAPAN SURVEYORS
JERSEY SURVEYORS JORDAN SURVEYORS KAZAKHSTAN SURVEYORS KENYA SURVEYORS KIRIBATI SURVEYORS
KOREA SURVEYORS KOREA REPUBLIC OF SURVEYORS KUWAIT SURVEYORS KYRGYZSTAN SURVEYORS LAO PEOPLE'S DEMOCRATIC REPUBLIC SURVEYORS
LATVIA SURVEYORS LEBANON SURVEYORS LESOTHO SURVEYORS LIBERIA SURVEYORS LIBYAN ARAB JAMAHIRIYA SURVEYORS
LIECHTENSTEIN SURVEYORS LITHUANIA SURVEYORS LUXEMBOURG SURVEYORS MACAU SURVEYORS MACEDONIA SURVEYORS
MADAGASCAR SURVEYORS MALAWI SURVEYORS MALAYSIA SURVEYORS MALDIVES SURVEYORS MALI SURVEYORS
MALTA SURVEYORS MARSHALL ISLANDS SURVEYORS MARTINIQUE SURVEYORS MAURITANIA SURVEYORS MAURITIUS SURVEYORS
MAYOTTE SURVEYORS MEXICO SURVEYORS MICRONESIA SURVEYORS MOLDOVA SURVEYORS MONACO SURVEYORS
MONGOLIA SURVEYORS MONTENEGRO SURVEYORS MONTSERRAT SURVEYORS MOROCCO SURVEYORS MOZAMBIQUE SURVEYORS
MYANMAR SURVEYORS NAMIBIA SURVEYORS NAURU SURVEYORS NEPAL SURVEYORS NETHERLANDS SURVEYORS
NEW CALEDONIA SURVEYORS NEW ZEALAND SURVEYORS NICARAGUA SURVEYORS NIGER SURVEYORS NIGERIA SURVEYORS
NIUE SURVEYORS NON-SPEC ASIA PAS LOCATION SURVEYORS NORFOLK ISLAND SURVEYORS NORTHERN MARIANA ISLANDS SURVEYORS NORWAY SURVEYORS
OMAN SURVEYORS PAKISTAN SURVEYORS PALAU SURVEYORS PALESTINIAN TERRITORY OCCUPIED SURVEYORS PANAMA SURVEYORS
PAPUA NEW GUINEA SURVEYORS PARAGUAY SURVEYORS PERU SURVEYORS PHILIPPINES SURVEYORS POLAND SURVEYORS
PORTUGAL SURVEYORS PUERTO RICO SURVEYORS QATAR SURVEYORS RESERVED SURVEYORS REUNION SURVEYORS
ROMANIA SURVEYORS RUSSIAN FEDERATION SURVEYORS RWANDA SURVEYORS SAINT KITTS & NEVIS SURVEYORS SAINT LUCIA SURVEYORS
SAINT MARTIN SURVEYORS SAINT VINCENT & THE GRENADINES SURVEYORS SAMOA SURVEYORS SAN MARINO SURVEYORS SAO TOME & PRINCIPE SURVEYORS
SAUDI ARABIA SURVEYORS SENEGAL SURVEYORS SERBIA SURVEYORS SEYCHELLES SURVEYORS SIERRA LEONE SURVEYORS
SINGAPORE SURVEYORS SINT MAARTEN SURVEYORS SLOVAKIA (SLOVAK REPUBLIC) SURVEYORS SLOVENIA SURVEYORS SOLOMON ISLANDS SURVEYORS
SOMALIA SURVEYORS SOUTH AFRICA SURVEYORS SOUTH SUDAN SURVEYORS SPAIN SURVEYORS SRI LANKA SURVEYORS
ST. PIERRE AND MIQUELON SURVEYORS SUDAN SURVEYORS SURINAME SURVEYORS SWAZILAND SURVEYORS SWEDEN SURVEYORS
SWITZERLAND SURVEYORS SYRIAN ARAB REPUBLIC SURVEYORS TAIWAN; REPUBLIC OF CHINA (ROC) SURVEYORS TAJIKISTAN SURVEYORS TANZANIA UNITED REPUBLIC OF SURVEYORS
THAILAND SURVEYORS TIMOR-LESTE SURVEYORS TOGO SURVEYORS TOKELAU SURVEYORS TONGA SURVEYORS
TRINIDAD AND TOBAGO SURVEYORS TUNISIA SURVEYORS TURKEY SURVEYORS TURKMENISTAN SURVEYORS TURKS AND CAICOS ISLANDS SURVEYORS
TUVALU SURVEYORS UGANDA SURVEYORS UKRAINE SURVEYORS UNITED ARAB EMIRATES SURVEYORS UNITED KINGDOM SURVEYORS
UNITED STATES SURVEYORS URUGUAY SURVEYORS UZBEKISTAN SURVEYORS VANUATU SURVEYORS VENEZUELA SURVEYORS
VIET NAM SURVEYORS VIRGIN ISLANDS (BRITISH) SURVEYORS VIRGIN ISLANDS (U.S.) SURVEYORS WALLIS AND FUTUNA ISLANDS SURVEYORS YEMEN SURVEYORS
ZAMBIA SURVEYORS ZIMBABWE SURVEYORS SURVEYORS

Location Based Surveying Practices

Land Surveyors United is the world's FIRST Global Social Network for geospatial professionals. We have dedicated, geolocated support groups for practically every country, continent and state on earth, for you to utilize for building your personal network. We are all essentially concerned with the same issues, no matter where we are located on earth. However, surveying practices and methods vary depending on the geographic location where we work. If you have noticed similarities and differences between the conditions, laws and practices between two or more areas of the world,discuss it in this forum. Build your reputation online by posting relevant discussions in your local group below.

Join and Introduce Yourself in Your Local Geosocial Forum:

Alabama Alaska Arizona Arkansas California
Colorado Connecticut Delaware Florida Georgia
Hawaii Idaho Illinois Indiana Iowa
Kansas Kentucky Louisiana Maine Maryland
Massachusetts Michigan Minnesota Mississippi Missouri
Montana Nebraska Nevada New Hampshire New Jersey
New Mexico New York North Carolina North Dakota Ohio
Oklahoma Oregon Pennsylvania Rhode Island South Carolina
South Dakota Tennessee Texas Utah Vermont
Virginia Washington West Virginia Wisconsin Wyoming

Not based in the US? Here are other groups for surveyors around the world to join and contribute knowledge and experiences as a land surveyor:

Africa Asia Australia Europe Russia Canada
Antarctica S.America N. America India Malaysia Caribbean

And more... Find your group forum based on location.

Choose Your Equipment Group Here

Handheld US Social Support for Land SurveyorsNIKON Social Support for Land SurveyorsTrimble Social Support for Land SurveyorsTopcon Social Support for Land SurveyorsSokkia Social Support for Land SurveyorsAshtech Social Support for Land SurveyorsNAVCOM Social Support for Land SurveyorsMagellan Social Support for Land SurveyorsLeica Social Support for Land SurveyorsAltus Positioning Social Support for Land SurveyorsMicroSurvey Social Support for Land SurveyorsJuniper Systems Social Support for Land SurveyorsTraverse PC Social Support for Land SurveyorsCarlson Software Social Support for Land Surveyors

what where  
job title, keywords or company
city, state or zip jobs by job search

PLEASE DONATE TODAY. Your generosity preserves surveying and mapping knowledge for future generations. Thank you.

Survey Equipment Troubles?

Geo Visitors Map

Choose Your Group Here

Surveying Equipment Support for Leica, Carlson, Sokkia, Trimble, Topcon, Altus, Nikon equipment


Surveyor Birthdays

Surveyor Birthdays Today

Surveyor Birthdays Tomorrow

© 2017   © Created by Land Surveyors United   Powered by

Badges  |  Contact LSU  |  Privacy Policy  |  Terms of Service

Live Support