GPS or Global Positioning System, or GNSS Global Navigation Satellite System
Keywords : gps survey, gnss survey, drone survey, levelling survey, hills survey, hill survey, railway survey, new railway survey, Airborne lidar survey, Power transmission line, Route Planning , Line Construction, Optimization route,Catenary analysis, Identification of tower construction sites, Vegetation Enchoachment management, Change detection, As built survey..
GPS or Global Positioning System was developed and is maintained by the US Department of Defense. Since the introduction of GPS many other countries have developed similar satellite based navigation systems,
Surveying with GPS
Initially developed for military use, GPS is now part of everyday life. A few of the many things that GPS is used in include: mobile phones, in-car navigation and search and rescue equipment. But there is a wide variety of equipment and techniques that can be used for surveying.
GPS was rapidly adapted for surveying, as it can give a position (Latitude, Longitude and Height) directly, without the need to measure angles and distances between intermediate points. Survey control could now be established almost anywhere and it was only necessary to have a clear view of the sky so the signal from the GPS satellites could be received clearly.
GPS is similar in some ways to the Trilateration and EDM previously discussed, except that the known positions are now the GPS satellites (and their orbits) 20,000 km in space. The equipment and calculations are extremely complex, but for the user the process is generally very simple.
In the commonly available receivers, the GPS receiver almost instantly works out its position (Latitude, Longitude and Height) with an uncertainty of a few metres, from the data broadcast by the satellites. This data includes a description of the satellites changing position (its orbit) and the time the data was transmitted.
SURVEY SERVICES & TRAINING
Total Station
Topographical Survey
Property Survey
Setting Out Works Survey
Power Line Survey Survey
Railway survey
Hills survey
Minning survey
Road survey
Airport survey
Airforce NOC survey
UAV survey
Lidar survey
Pipeline survey
Power survey
Roperty survey
Geo Technical survey
Utility survey
Control Point survey
Route survey
Airport survey
Special survey
Contour survey
Levelling survey
Railway Project survey
Interior survey
Building survey
Road survey
Township survey
Drone survey
Drone Aerial survey
Drone survey
GBS survey
GPS Control Survey
Engineering survey
Transmission Line survey
Dam and Lake survey
Layout survey
Boundary survey
FMB Drawing survey
Canal survey
Marking survey
Layout Marking survey
Columns Marking survey
Excavation Points Marking survey
Pile Marking survey
Building Outer Lines Marking survey
Commercial
Residential
All Types of Construction Layout / Staking
ALTA / ACSM Surveys
As-Built-Record Surveys
Auction Surveys and Plats
Boundary Surveys
Control Surveys
Court Surveys / Professional Witness
Disputes
ividing and Platting of Land for City or County Planning Commissions
Flood Elevation Certificates
Foundation Surveys
Large Acreage Surveys
LOMA's / LOMR's
Metes and Bounds
Mortgage Surveys
Property Surveys for Fences, Pools, and Additions
Quantity Surveys
Stockpile Quantity Surveys
Subdivision Development
Types of land surveying List Methods
land survey services in angola ,
total station survey services in angola ,
topographical survey services in angola ,
property survey services in angola ,
setting out works survey services in angola ,
power line survey services in angola survey services in angola ,
railway survey services in angola ,
hills survey services in angola ,
minning survey services in angola ,
road survey services in angola ,
airport survey services in angola ,
airforce noc survey services in angola ,
uav survey services in angola ,
lidar survey services in angola ,
pipeline survey services in angola ,
power survey services in angola ,
roperty survey services in angola ,
geo technical survey services in angola ,
utility survey services in angola ,
control point survey services in angola ,
route survey services in angola ,
airport survey services in angola ,
special survey services in angola ,
contour survey services in angola ,
levelling survey services in angola ,
railway project survey services in angola ,
interior survey services in angola ,
building survey services in angola ,
road survey services in angola ,
township survey services in angola ,
drone survey services in angola ,
drone aerial survey services in angola ,
drone survey services in angola ,
gbs survey services in angola ,
gps control survey services in angola ,
engineering survey services in angola ,
transmission line survey services in angola ,
dam and lake survey services in angola ,
layout survey services in angola ,
boundary survey services in angola ,
fmb drawing survey services in angola ,
canal survey services in angola ,
marking survey services in angola ,
layout marking survey services in angola ,
columns marking survey services in angola ,
excavation points marking survey services in angola ,
pile marking survey services in angola ,
building outer lines marking survey services in angola ,
total station surveying services in angola ,
topographical surveying services in angola ,
property surveying services in angola ,
setting out works surveying services in angola ,
power line surveying services in angola , surveying services in angola ,
railway surveying services in angola ,
hills surveying services in angola ,
minning surveying services in angola ,
road surveying services in angola ,
airport surveying services in angola ,
airforce noc surveying services in angola ,
uav surveying services in angola ,
lidar surveying services in angola ,
pipeline surveying services in angola ,
power surveying services in angola ,
roperty surveying services in angola ,
geo technical surveying services in angola ,
utility surveying services in angola ,
control point surveying services in angola ,
route surveying services in angola ,
airport surveying services in angola ,
special surveying services in angola ,
contour surveying services in angola ,
levelling surveying services in angola ,
railway project surveying services in angola ,
interior surveying services in angola ,
building surveying services in angola ,
road surveying services in angola ,
township surveying services in angola ,
drone surveying services in angola ,
drone aerial surveying services in angola ,
drone surveying services in angola ,
gbs surveying services in angola ,
gps control surveying services in angola ,
engineering surveying services in angola ,
transmission line surveying services in angola ,
dam and lake surveying services in angola ,
layout surveying services in angola ,
boundary surveying services in angola ,
fmb drawing surveying services in angola ,
canal surveying services in angola ,
marking surveying services in angola ,
layout marking surveying services in angola ,
columns marking surveying services in angola ,
excavation points marking surveying services in angola ,
pile marking surveying services in angola ,
building outer lines marking surveying services in angola ...
list of our services following cities
Afghanistan |
Africa |
Albania |
Algeria |
Americas |
Andorra |
Angola |
Anguilla |
Antigua and Barbuda |
Argentina |
Armenia |
Aruba |
Asia |
Australia |
Australia and New Zealand |
Austria |
Azerbaijan |
Bahamas |
Bahrain |
Bangladesh |
Barbados |
Belarus |
Belgium |
Belize |
Benin |
Bermuda |
Bhutan |
Bolivia (Plurinational State of) |
Bosnia and Herzegovina |
Botswana |
Brazil |
British Virgin Islands |
Brunei Darussalam |
Bulgaria |
Burkina Faso |
Burundi |
Cabo Verde |
Cambodia |
Cameroon |
Canada |
Caribbean |
Cayman Islands |
Central African Republic |
Central America |
Central Asia |
Chad |
Chile |
China, Hong Kong SAR |
China, Macao Special Administrative Region |
China, People's Republic of |
Colombia |
Comoros |
Congo |
Cook Islands |
Costa Rica |
Côte d'Ivoire |
Croatia |
Cuba |
Curaçao |
Cyprus |
Czechia |
Democratic People's Republic of Korea |
Democratic Republic of the Congo |
Denmark |
Djibouti |
Dominica |
Dominican Republic |
Eastern Africa |
Eastern Asia |
Eastern Europe |
Ecuador |
Egypt |
El Salvador |
Equatorial Guinea |
Eritrea |
Estonia |
Ethiopia |
Europe |
Fiji |
Finland |
Former Czechoslovakia |
Former Ethiopia |
Former Netherlands Antilles |
Former Sudan |
Former USSR |
Former Yugoslavia |
France |
French Polynesia |
Gabon |
Gambia |
Georgia |
Germany |
Ghana |
Greece |
Greenland |
Grenada |
Guatemala |
Guinea |
Guinea-Bissau |
Guyana |
Haiti |
Honduras |
Hungary |
Iceland |
India |
Indonesia |
Iran, Islamic Republic of |
Iraq |
Ireland |
Israel |
Italy |
Jamaica |
Japan |
Jordan |
Kazakhstan |
Kenya |
Kingdom of Eswatini |
Kiribati |
Kosovo |
Kuwait |
Kyrgyzstan |
Lao People's Democratic Republic |
Latin America and the Caribbean |
Latvia |
Lebanon |
Lesotho |
Liberia |
Libya |
Liechtenstein |
Lithuania |
Luxembourg |
Madagascar |
Malawi |
Malaysia |
Maldives |
Mali |
Malta |
Marshall Islands |
Mauritania |
Mauritius |
Melanesia |
Mexico |
Micronesia |
Micronesia (Federated States of) |
Middle Africa |
Monaco |
Mongolia |
Montenegro |
Montserrat |
Morocco |
Mozambique |
Myanmar |
Namibia |
Nauru |
Nepal |
Netherlands |
New Caledonia |
New Zealand |
Nicaragua |
Niger |
Nigeria |
Northern Africa |
Northern America |
Northern Europe |
Norway |
Oceania |
Oman |
Pakistan |
Palau |
Panama |
Papua New Guinea |
Paraguay |
Peru |
Philippines |
Poland |
Polynesia |
Portugal |
Puerto Rico |
Qatar |
Republic of Korea |
Republic of Moldova |
Republic of North Macedonia |
Romania |
Russian Federation |
Rwanda |
Saint Kitts and Nevis |
Saint Lucia |
Saint Vincent and the Grenadines |
Samoa |
San Marino |
Sao Tome and Principe |
Saudi Arabia |
Senegal |
Serbia |
Seychelles |
Sierra Leone |
Singapore |
Sint Maarten (Dutch part) |
Slovakia |
Slovenia |
Solomon Islands |
Somalia |
South Africa |
South America |
South Sudan |
South-Eastern Asia |
Southern Africa |
Southern Asia |
Southern Europe |
Spain |
Sri Lanka |
State of Palestine |
Sub-Saharan Africa |
Sudan |
Suriname |
Sweden |
Switzerland |
Syrian Arab Republic |
Tajikistan |
Thailand |
Timor-Leste |
Togo |
Tonga |
Trinidad and Tobago |
Tunisia |
Turkey |
Turkmenistan |
Turks and Caicos Islands |
Tuvalu |
Uganda |
Ukraine |
United Arab Emirates |
United Kingdom of Great Britain and Northern Ireland |
United Republic of Tanzania: Mainland |
United Republic of Tanzania: Zanzibar |
United States |
Uruguay |
Uzbekistan |
Vanuatu |
Venezuela (Bolivarian Republic of) |
Viet Nam |
Western Africa |
Western Asia |
Western Europe |
World |
Yemen |
Yemen: Former Democratic Yemen |
Yemen: Former Yemen Arab Republic |
Zambia |
Zimbabwe ...
list of our services following town or city
Ambriz |
Andulo |
Baía Farta |
Bailundo |
Balombo |
Benguela |
Bibala (Vila Arriaga) |
Biula |
Bungo |
Caála (Kaala, Kahala, Robert Williams, Vila Robert Williams) Cabamba |
Cabinda (Kabinda) |
Caboledo |
Cacolo |
Caconda |
Caculama |
Cacuso |
Cafunfo |
Cahama |
Caiengue |
Caimbambo |
Calandala |
Calenga (Kalenga) |
Calonda |
Calucinga |
Calulo |
Caluquembe (Kalukembe) |
Camabatela |
Camacupa (General Machado, Vila General Machado) Camanongue (Buçaco, Kamenongue) |
Camaxilo |
Cambambe |
Cambongue |
Cambundi (Nova Gaia, Catembo) |
Camissombo (Veríssimo Sarmento) |
Candjimbe |
Cangamba (Vila de Aljustrel) |
Cangandala |
Cangumbe |
Capelongo (Cubango, Kuvango) |
Capenda Camulemba |
Capulo |
Cassanguide (Cassanguidi) |
Cassongue |
Catabola (Katabola, Chissamba, Nova Sintra) |
Catacanha |
Catchiungo (Katchiungo, Katchungo, Cantchiungo) Catumbela |
Caungula |
Caxita Cameia |
Caxito |
Cazaje (Cazage) |
Cazombo |
Cela |
Chiange (Gambos) |
Chibanda Chibemba |
Chibia |
Chicala |
Chingufo |
Chipindo |
Chissamba |
Chitado |
Chitembo |
Coemba |
Colui (Candingo) |
Conda |
Cota |
Coutada |
Cuangar |
Cuango-Luzamba (Kwango, Luzamba, Cuango) |
Cuasa |
Cubal |
Cuchi |
Cuilo |
Cuima |
Cuimba |
Cuito Cuanavale |
Cuvelai |
Dala |
Damba |
Didimbo |
Dombe Grande |
Dondo |
Dongo |
Dundo (Chitato) |
Ekunha (Vila Flor) |
Folgares |
Funda |
Gabela |
Galo |
Ganda |
Golungo Alto |
Guri |
Huambo (Nova Lisboa) |
Humpata |
Jamba |
Jamba |
Kuito (Bié, Silva Porto) |
Lândana (Cacongo) |
Leúa |
Lobito |
Lombe |
Longa |
Longonjo |
Luacano (Dilolo) |
Luanda (Loanda, São Paulo de Loanda) |
Luau |
Luau (Vila Teixeira de Sousa) |
Lubango (Sá da Bandeira) |
Lucala |
Lucapa (Lukapa) |
Lucusse |
Luena (Lwena, Luso, Vila Luso) |
Luiana |
Luimbale (Londuimbali) |
Luma Cassao |
Lumbala N'guimbo (Lumbala) |
Lumeje |
Luremo |
Luxilo |
M'Bimbi (Bimbe) |
Malanje (Malange) |
Malembo |
Maludi |
Marimba |
Marimbanguengo |
Massango |
Matala |
Mavinga |
Mbanza-Congo (M'banza-Kongo, São Salvador, São Salvador do Congo) Menongue (Vila Serpa, Pinto, Serpa Pinto) |
Moçâmedes |
Muchinda |
Muconda (Nova Chaves) |
Mucumbo |
Mucusso |
Mucussueje |
Muginga |
Mulondo |
Mungo |
Munhango |
Mussende |
Musserra (Mafuca) |
Mussuco |
N'dalatando (Vila Salazar) |
N'zeto (Nzeto, Ambrizete) |
Namacunde (Santa Clara) |
Negage |
Nharea |
Nóqui |
Nzagi (Andrada) |
Ondjiva |
Pinheiro |
Porto Amboim (Gunza) |
Quela |
Quibala (Kibala) |
Quibaxe |
Quicombo (Kikombo) |
Quilengues |
Quimavongo |
Quimavongo |
Quimbango |
Quimbango |
Quimbele |
Quimbele |
Quipungo (Gambos) |
Quipungo (Gambos) |
Quirima |
Quirima |
Sacomar, (Saco-Mar, Saco Mar) |
Samunona |
Saurimo(Henrique de Carvalho) |
Savate (Candingo) |
Savungo |
Songo |
Soyo (Santo António do Zaire) |
Sumbe (Novo Redondo) |
Tchindjenje (Quingenge) |
Tchipelongo |
Techamutete (Chamutete) |
Tentativa |
Tombua (Tomboa, Tombwa, Tombwe, Porto Alexandre) Tumba |
Uíge (Uije, Carmona, Vila Marechal Carmona) |
Uku (Vila Nova do Seles) |
Ukuma (Cuma) |
Viana |
Waku Kungo (Waku Kundo, Santa Comba, Buandangue, Uaco Cungo) Xá-Muteba |
Xangongo (Vila Roçades) ....
list of our services following Province
Bengo |
Bié |
Benguela |
Huambo |
Benguela |
Benguela |
Namibe |
Lunda Sul |
Uíge |
Huambo |
Malanje |
Cabinda |
Bengo |
Lunda Sul |
Huíla |
Malanje |
Malanje |
Lunda Norte |
Cunene |
Huambo |
Benguela |
Lunda Norte |
Huambo |
Lunda Norte |
Bié |
Cuanza Sul |
Huíla |
Cuanza Norte |
Bié |
Moxico |
Lunda Norte |
Lunda Norte |
Namibe |
Malanje |
Lunda Norte |
Huambo |
Moxico |
Malanje |
Moxico |
Huíla |
Lunda Norte |
Bengo |
Lunda Norte |
Cuanza Sul |
Bié |
Bengo |
Huambo |
Benguela |
Lunda Norte |
Malanje |
Bengo |
Lunda Sul |
Moxico |
Cuanza Sul |
Huíla |
Bié |
Huíla |
Huíla |
Moxico |
Lunda Norte |
Huíla |
Bié |
Cunene |
Bié |
Bié |
Huíla |
Cuanza Sul |
Malanje |
Cuando Cubango |
Cuando Cubango |
Lunda Norte |
Moxico |
Benguela |
Cuando Cubango |
Lunda Norte |
Huambo |
Zaire |
Cuando Cubango |
Cunene |
Lunda Sul |
Uíge |
Benguela |
Cuanza Norte |
Huíla |
Lunda Norte |
Cunene |
Huíla |
Bengo |
Cuanza Sul |
Cuanza Sul |
Benguela |
Cuanza Norte |
Lunda Norte |
Huambo |
Huíla |
Cuando Cubango |
Huíla |
Bié |
Cabinda |
Moxico |
Benguela |
Malanje |
Cuando Cubango |
Huambo |
Moxico |
Luanda |
Cuanza Sul |
Moxico |
Huíla |
Cuanza Norte |
Lunda Norte |
Moxico |
Moxico |
Cuando Cubango |
Huambo |
Lunda Sul |
Moxico |
Moxico |
Lunda Norte |
Lunda Norte |
Huambo |
Malanje |
Cabinda |
Lunda Norte |
Malanje |
Malanje |
Malanje |
Huíla |
Cuando Cubango |
Zaire |
Cuando Cubango |
Namibe |
Lunda Norte |
Lunda Sul |
Lunda Norte |
Cuando Cubango |
Moxico |
Lunda Norte |
Huíla |
Huambo |
Moxico |
Cuanza Sul |
Zaire |
Lunda Norte |
Cuanza Norte |
Zaire |
Cunene |
Uíge |
Bié |
Zaire |
Lunda Norte |
Cunene |
Huambo |
Cuanza Sul |
Malanje |
Cuanza Sul |
Cuanza Norte |
Cuanza Sul |
Huíla |
Zaire |
Zaire |
Malanje |
Malanje |
Uíge |
Uíge |
Huíla |
Huíla |
Huíla |
Malanje |
Namibe |
Lunda Norte |
Lunda Sul |
Cuando Cubango |
Lunda Sul |
Uíge |
Zaire |
Cuanza Sul |
Huambo |
Cunene |
Huíla |
Bengo |
Namibe |
Lunda Norte |
Uíge |
Cuanza Sul |
Huambo |
Luanda |
Cuanza Sul |
Lunda Norte |
Cunene ...