GB/T 42435-2023 Technical specification for coastal erosion monitoring and disaster losses evaluation

GB/T 17501-2017 Specification for marine engineering topographic surveying CH/T 2009 GB/T 12763.2-1991 The specification for oceanographic survey—Marine hydrographic observations GB/T 12763.2-2007 Specifications for oceanographic survey—Part 2:Marine hydrographic observation GB/T 12763.8-2007 Specifications for oceanographic survey—Part 8:Marine geology and geophysics survey GB 12898-1991 Specifications for the third and fourth order leveling GB/T 12898-2009 Specifications for the third and fourth order leveling GB 15968-1995 Specification for making photo plan of remote sensing GB/T 15968-2008 Specifications for remote sensing image plan making GB/T 20257.1-2007 Cartographic symbols for national fundamental scale maps—Part 1:Specifications for cartographic symbols 1∶500 1∶1 000 & 1∶2 000 topographic maps GB/T 20257.1-2017 Cartographic symbols for national fundamental scale maps—Part 1:Specifications for cartographic symbols 1∶500 1∶1 000 & 1∶2 000 topographic maps GB/T 20257.2-2006 Cartographic symbols for national fundamental scale maps—Part 2:Specifications for cartographic symbols 1∶5 000 & 1∶10 000 topographic maps GB/T 20257.2-2017 Cartographic symbols for national fundamental scale maps—Part 2:Specifications for cartographic symbols 1∶5 000 & 1∶10 000 topographic maps GB/T 21010-2007 Current land use classification GB/T 21010-2017 Current land use classification CH/T 3003-2021 Low-altitude digital aerial photogrammetry internal specifications CH/Z 3003-2010 Low-altitude digital aerial photogrammetry internal specifications