Investigation Of Global Positioning System (GPS) Survey Specification For Forestry

With the loading of L2C & L5 for GPS, GLONASS system more & more perfect, bring GALILEO system into operation, globalize for CASP system, application area of GPS are continuously expanded and deepened. The applications of GPS are extensive used in forestry works. Such as make certain the place for planting area, area survey for forested areas, planning programming for forestation, integrated management and research of forest resources, positioning and evaluation of forest-fire & damage by plant diseases and insect pests, dynamic monitoring of forest resources, positioning for rare valuable trees and species, to detect the life habit of rare wild animal, geometric accurate correction for image of forestry remote sensing, to draw the forest distribution map, navigation & positioning for tourism, exploration & scientific surveying of virgin forest, navigation & positioning for airplane seeding, spraying and fertilizing etc. As it were, GPS is an important method for forest science research & forest production Management. Meanwhile, it is an important part of digital forest & forestry informationize construction.Global Positioning System (GPS) Survey Specification are constituted & issued by National surveying and mapping administration & the State Bureau of Quality and Technical Supervision.Global Positioning System (GPS) Survey Specification for City are constituted by ministry of construction.Global Positioning System (GPS) Survey Specification for Highway are constituted by ministry of communications. Research & constituted Global Positioning System (GPS) Survey Specification for Forestry are the necessary trend of forest industry. As the forest project develop, it will make the GPS surveying more normalize, reliable & standardize in forestry. Meanwhile, it is also increase the forest management level of our country to a new stage.This thesis base on the serious research of GPS survey specification both domestic and abroad, according to the characteristic of forest, analytical the error source of GPS surveying & the GPS survey technical requirements of forest works, based on the various pattern of GPS, such as classic static surveying, RTKGPS surveying, hand-hold GPS surveying, to adopt various methods & instrument to make a mass of experimentations in different condition of environment, research the mutual relation between forest & GPS survey, and put forward a Global Positioning System (GPS) Survey Specification for Forestry target & system,then to analyze & discuss it.After analytic demonstration, laying First class GPS control network in forested area should be adopt the Static relative positioning pattern, it can divide the precision into four level(Level 1,2,3,4). Adopt the quick static positioning, RTK GPS or high precision hand-hold GPS receiver (e.g.Trimble Geo) to geometric accurate correct for high-resolution images of forestry remote sensing. We can use the hand-hold GPS receiver precision in 5m-15m to continuously check & dynamic monitor forest resources.Global Positioning System (GPS) Survey Specification for Forestry in this thesis is accord with the technical requirement of Global Positioning System (GPS) Survey Specification & Technical Stipulation of National Continuous Forest Inventory.It's endowed with realizable & maneuverability to guide & standard the GPS survey works for forest.