DOD MIL-PRF-32030-1998 DIGITAL BATHYMETRIC DATA BASE - VARIABLE RESOLUTION (DBDB-V)《等深线数椐资料库-可变决议(DBDB-V)》.pdf
《DOD MIL-PRF-32030-1998 DIGITAL BATHYMETRIC DATA BASE - VARIABLE RESOLUTION (DBDB-V)《等深线数椐资料库-可变决议(DBDB-V)》.pdf》由会员分享,可在线阅读,更多相关《DOD MIL-PRF-32030-1998 DIGITAL BATHYMETRIC DATA BASE - VARIABLE RESOLUTION (DBDB-V)《等深线数椐资料库-可变决议(DBDB-V)》.pdf(25页珍藏版)》请在麦多课文档分享上搜索。
1、MIL-PRF-32030 = 9999906 2069180 OT2 W 1 . METRIC 1 MIL-PRF-32030 27 May 1998 PEREORMANCE SPECIFICATION DIGITAL BATHPMETRIC DATA BASE - VARIABLE RESOLUTION (DBDB-V) This specification is approved for use by all Departments and Agencies of the Department of Defense. 1.1 Scope. This specification defin
2、es the content and format for the U.S. Naval Oceanographic Office NAVOCEANO Digital Bathymetric Data Base - Variable Resolution (DDBDB-V) product. DBDB-V is a digital bathymetric data base that provides ocean depths at various gridded resolutions. 1.2 Purpose. DBDB-V was developed by NAVOCEANO to su
3、pport the generation of bathymetric chart products, and to provide bathymetric data to be integrated with other geophysical and environmental parameters. for ocean modeling. This specification provides a description of the content, accuracy, data format, and design of the DBDB-V database. 1.3 Classi
4、fication. DBDB-V data is a combination of different resolution gridded bathymetric data bases. The grid post spacing, defined in terms of geographic arc minutes will be 0.5, 1, 2 and 5 minutes for Version 1.0 of DBDB-V. 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are sp
5、ecified in sections 3 and 4 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned th
6、at they must meet all specified requirements documents cited in sections 3 and 4 of this specification, whether or not they are listed. 2.2 Government documents 2.2.1 Specifications, standards, and handbooks The following specifications, standards, and handbooks form a part of this document to the e
7、xtent specified herein. Unless otherwise specified, the issues of these documents are those listed in the current Department of Defense Index of Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: D
8、irector, National Imagery and Mapping Agency, ATTN: NIMA Customer Support/COD, 12310 Sunrise Valley Drive, Reston, VA 20191-3449 by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or bv letter. AMSC NIA AREA MCGT DISTRIBUTION STATEMENT A.
9、Approved for public release; distribution is approved for public release; distribution is unlimited. 3.7 CD ROM labeling and packaging. CD ROM labeling, and labeling on the cardboard sleeve, or jewel case liner/information booklet, as applicable, shall be in accordance with the contract. Method of p
10、ackaging (cardboard sleeve or jewel case) shall be as specified in the contract (see 5.1). References to figures below are applicable to the DBDB-V available for unlimited distribution/public sale. 3.7.1 Product specific items. The following is a list of “variable by product“ items shown on CD-ROM l
11、abeling and packaging, and the relevant information specific to DBDB-V. a. b. C. d. e. Product Description: Digital Bathymetric Data Base - Variable Resolution (DBDB-P) Series : DBDB-V NIMA reference number format is DBDBVnnnOO, where nnn represents the three digit DBDB-V CD number. Copyright note:
12、(year of production inserted) Copyright (add year) by the U.S. Government. No copyright claimed under title 17, U.S.C. Intellectual property rights on data may be subject to claims by other nations. Users intending to exploit and distribute data further should contact the appropriate U.S. or non- U.
13、S. hydrographic authority with respect to such claims and U.S. copyright. NIMA Reference Number: First five digits are “DBDBV“ and last three digits are three digit CD number, i.e., “016“. 3.7.2 Volume identifier. This should be identical to the eleven characters of the Volume Identifier (first elev
14、en characters of the IS0 9660 Volume Identifier (32 characters available) written on the header of the disk (see MIL-HDBK-9660). 3.7.3 Information booklet. Information booklets shall be provided for each DBDB-V CD. Labeling of the DBDB-V information booklet covers shall be in accordance with the con
15、tract. When used in conjunction with the jewel case, the front cover of the information booklet also serves as the front cover of the case. 14 Licensed by Information Handling ServicesMIL-PRF-32030 U 9Ob 20bL94 b? MIL-PRF-32030 3.7.3.1 Introductory statement. All DBDB-V information booklets show the
16、 following standard introductory statement. Introduction DBDB-V is a digital bathymetric data base that provides ocean depths at various gridded resolutions. DBDB-V was developed by NAVOCEANO to support the generation of bathymetric chart products, and to provide bathymetric data to be integrated wi
17、th other geophysical and environmental parameters for ocean modeling. DBDB-V is a combination of different resolution gridded bathymetric data bases. The depth posts, or grid nodes, are defined by the intersections of rows and columns witbin a matrix. The matrix intervals, or grid post spacing, defi
18、ned in terms of geographic arc minutes will be 0.5, 1, 2 and 5 minutes for Version 1.0 of DBDB-V. This DBDB-V was produced under DoD Specification MIL-PRF-32030, (27 May 1998). 3.7.3.2 Source Information Source information shall be shown as illustrated in the following example: The coarser resolutio
19、n data grids (1, 2 and 5 arc minute grids) are constructed by digitizing bathymetric contours of hard copy charts. The digitization rate and nominal chart scales are 21 measurements per inch of contour at a nominal chart scale of 1:1000000 for the 1 minute grid, 21 measurements per inch of contour a
20、t a nominal chart scale of 1:1000000 for the 2 minute grid, and 10 measurements per inch of contour at a nominal chart scale of 1:4000000 for the 5 minute grid. These digitally rendered contours are then put through a gridding routine developed by the Naval Oceanographic Office. This routine takes t
21、he values that fall within a grid node area of influence and utilizing a multi-stage minimum-curvature spline algorithm, interpolates the values to derive a single representative depth value for each grid node (1, 2 or 5 arc minute grid node spacing) The finer resolution data grid (0.5 arc minute gr
22、id) is generated in two distinct manners: a. Hard copy charts have contour digitization performed at a rate of 21 measurements per inch of contour and at a nominal chart scale of 1:500000. The digitized contours and/or digital source data are input to a gridding routine developed by the Naval Oceano
23、graphic Office. This routine takes the values that fall within a grid node area of influence and, utilizing a multi-stage minimum-curvature spline algorithm, interpolates the values to derive a single representative depth value for each grid node (0.5 arc minute spacing), or b. It can be derived dir
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