GPS Survey Benchmarks

OBJECTID: System-generated unique identifier for each record within the feature class. SOURCE: Organization that provided the data. NAME: Name associated to the GPS Monument by the number at which it was recorded. INSTALLDATE: Date of installation for the real-world feature represented in the feature class. ELEVATION: Elevation recorded during monument placement, above sea level. XCOORDINATE: The horizontal value in a pair of coordinates: how far along the point is. The X Coordinate is always written first in an ordered pair. YCOORDINATE: The vertical value in a pair of coordinates. How far up or down the point is. The Y Coordinate is always written second in an ordered pair. DISTANCE1: This is the footage distance from the described location in 'Distance1Description' field. DISTANCE2: This is the footage distance from the described location in 'Distance2Description' field. DISTANCE3: This is the footage distance from the described location in 'Distance3Description' field. AZIMUTH: An angular measurement in a spherical coordinate system. The vector from an observer to a point of interest is projected perpendicularly onto a reference plane; the angle between the projected vector and a reference vector on the reference plane is called the azimuth. BEARING: The actual (corrected) compass direction of the forward course of the aircraft. In land navigation, a bearing is the angle between a line connecting two points and a north-south, or meridian. DISTANCE1DESCRIPTION: This is the described location from which the distance is collected as a total of 3 location points. DISTANCE2DESCRIPTION: This is the described location from which the distance is collected as a total of 3 location points. DISTANCE3DESCRIPTION: This is the described location from which the distance is collected as a total of 3 location points. ROUTEDESCRIPTION: General description for where the marker is located in reference to known locations. MARKERCATEGORY: The way in which the marker is placed for GPS such as being placed in an aluminum disk set in concrete which is found physically in the ground. MEDIALINK: URL for a website related to the record. PRODUCTIONNOTES: Technical notes from GIS personnel. DESCRIPTION: Statement illustrating the feature. CREATEDBY: Name of the person logged into the system that GIS automatically stamps as the original creator. CREATEDDATE: Date/time stamp from the moment the GIS record was created. MODIFIEDBY: Name of the person logged into the system that GIS automatically stamps as the feature is modified. MODIFIEDDATE: Date/time stamp from the last moment the GIS record was changed. SHAPE: System-generated geometry type of the feature. Shape.len: System-generated length of the feature. GlobalID: System-generated unique identifier for each record that is required in replicated geodatabases.对象标识符（OBJECTID）：系统为要素类内每条记录生成的唯一标识符。 数据提供方（SOURCE）：提供该数据集的组织机构。 名称（NAME）：GPS基准站（GPS Monument）按其记录编号所关联的标识名称。 安装日期（INSTALLDATE）：要素类所代表的实地地物的安装时间。 海拔高程（ELEVATION）：基准站布设时记录的相对于海平面的高程值。 X坐标（XCOORDINATE）：坐标对中的水平分量，代表点位沿横轴的偏移距离。有序坐标对中X坐标始终位于首位。 Y坐标（YCOORDINATE）：坐标对中的纵向分量，代表点位沿纵轴的偏移距离。有序坐标对中Y坐标始终位于次位。 距离1（DISTANCE1）：与"Distance1Description"字段中描述的参考位置之间的英尺距离。 距离2（DISTANCE2）：与"Distance2Description"字段中描述的参考位置之间的英尺距离。 距离3（DISTANCE3）：与"Distance3Description"字段中描述的参考位置之间的英尺距离。 方位角（AZIMUTH）：球面坐标系中的角度测量值。将观测者指向目标点的矢量垂直投影至参考平面，投影矢量与参考平面内参考矢量之间的夹角即为方位角。 方位（BEARING）：航空器前进航向经校正后的实际罗盘指向。在陆地导航中，方位指连接两点的直线与南北向（或子午线）之间的夹角。 距离1描述（DISTANCE1DESCRIPTION）：用于记录距离值的参考位置描述，共涵盖3个参考点位。 距离2描述（DISTANCE2DESCRIPTION）：用于记录距离值的参考位置描述，共涵盖3个参考点位。 距离3描述（DISTANCE3DESCRIPTION）：用于记录距离值的参考位置描述，共涵盖3个参考点位。 路径描述（ROUTEDESCRIPTION）：标记点相对于已知地标位置的通用描述文本。 标记类别（MARKERCATEGORY）：GPS标记的布设形式，例如将铝制圆盘嵌入地面混凝土中的固定式标记。 媒体链接（MEDIALINK）：与该记录相关的网站URL。 制作说明（PRODUCTIONNOTES）：地理信息系统（GIS）技术人员编写的技术备注。 要素描述（DESCRIPTION）：用于说明该地物特征的陈述性文本。 创建人（CREATEDBY）：登录系统创建GIS记录时，由系统自动标记的原始创建者姓名。 创建日期（CREATEDDATE）：GIS记录创建时自动生成的日期时间戳。 修改人（MODIFIEDBY）：登录系统修改该要素时，由系统自动标记的修改者姓名。 修改日期（MODIFIEDDATE）：GIS记录最后一次修改时自动生成的日期时间戳。 几何形状（SHAPE）：系统为该要素生成的几何类型。 形状长度（Shape.len）：系统为该要素生成的长度属性值。 全局唯一标识符（GlobalID）：系统为每条记录生成的唯一标识符，适用于复制型地理数据库场景。