DEFENSE  MAPPING  AGENCY 
81H10ING    5<5.   U.S.    NAVM    OBSEHVATORY 
WASHINGTON.    O.C.    20305 
DMAINST  C5200.5 
PPS 
21  March  197^ 
DMA  INSTRUCTION  C5200.5 
SUBJECT:   Security  Classification  of  the  DoD  World  Geodetic 
System  (WGS),  DoD  Geodetic  Data,  and  DoD  Geomagnetic 
Data  (U) 
REF:      a.   DIAM  70-1,  "Mapping  and  Charting  Security 
Management,"  dated  k   September  I969 •   Part  three 
of  subject  manual  is  hereby  replaced. 
b.   DoD  5200.1  R,  "Information  Security  Program 
Regulation,"  July  1972. 
1.  {]J)      Purpose .   To  establish  security  classification 
guidance  1  or  use  with  the  DoD  WGS  and  other  geodetic  and 
geophysical  data. 
2.  (U)   Scope .   This  instruction  applies  tj  all  elements 
and  agencies  of  DoD  who  use  the  DoD  WGS  and  collect  and/or 
use  geodetic  data,  gravimetric  data,  geodetic  satellite 
data  and  geomagnetic  data. 
3-   (U)   Authority.   This  instruction  is  issued  under  the 
authority  delegated  in  DoD  Directive  5105-^0,  "Defense  Mapping 
Agency  (DMA),"  dated  1  January  1972. 
Classification  Guide  for  DoD  WGS. 
(1:  The  terms  World  Geodetic  System.  DoD  World 
Geodetic  System,  DoD  WGS  (i.e.,  WGS  60,  WGS  66,  WGS  72) 
Unclassified . 
(2)  The  terms  in  (1)  above  in  conjunction  with 
text  or  graphics  vhlch   describe  the  general  idea  of  applica 
tion  -  Unclassified. 
(3)  Details  on  methods  of  derivation  of  DoD  WGS  - 
Unclassified. 
-  /  -  j- 
'—  *-L-^L^~
DMAINST  C52G0.5,  Cn-2 
(4)   Radius,  flattening,  gravity  at  the  equator, 
rtnd  gravitational  constant,  to  include  the  earth's  angular 
velocity  and  second  degree  harmonic  coefficient  term, 
when  identified  with  the  DoD  WGS  -  Unclassified. 
(7)   DoD  WGS  coordinates  or  any  geodetic  coordinates, 
of  any  accuracy,  produced  by  DoD  are  normally  Unclassified. 
They  may  be  classified  Confidential  or  higher  for  any  of 
the  following  reasons: 
(a)  When  required  by  host  countries. 
(b)  When  required  by  appropriate  authority 
to  protect  positions  of  sites  of  military  importance  or 
interest, 
(c)  When  required  to  protect  special  activities 
(d)  When  release  of  data  would  compromise 
classified  operations. 
(8)   Maps  and  charts,  regardless  of  scale,  com- 
piled on  or  related  to  the  DoD  WGS,  except  as  criteria 
(7)  (a)  through  (7)  (d)  above  may  warrant  their 
classification  -  Unclassified. 
b*   Classification  Guide  for  Gravity  and  Related  Data. 
(1)   Gravity  data  will  be  classified: 
(b)   When  the  data  requires  protection  to 
preclude  compromise  of  the  source  -  Confidential  or  higher 
with  appropriate  caveats.
(d)   The  intent  of  (c)  above  is  to  prohibit 
the  release  of  large  blocks  of  DoD  gravity  survey  data 
which  would  reveal  the  requirements  areas.   However,  subject 
to  HQ  DMA  approval  on  a  case-by-case  basis,  limited  quantities 
of  these  data  may  be  released  Unclassified. 
(2)   The  terms  DoD  Gravity  Program,  Launch  Region 
"•   /  Model  (LRGM)  -  Unclassified. 
(7)   Gravity  aata  produced  by  extrapolation,  inter- 
polation or  prediction  techniques  -  same  classification  as 
the  basic  source  data.
(9)   Mean  anomalies  computed  using  Unclassified 
gravity  data  -  Unclassified. 
c •   Classification  Guide  for  Geodetic  Satellite 
Observational  'Data,  i.e.,  Range,  Range  Rate.  Right  Ascension, 
and  Declination  Data"! 
(1)   Data  collected  from  sites  in  the  National 
Geodetic 'Satellite  Program  (NGSP)  (1965-1971)  -  Unclassified. 
d.   Classification  Guide  for  Geomagnetic  Data. 
(1)  As  a  general  policy,  magnetic  products  and 
data  will  not  be  classified  except  under  special  circumstances 
Precision,  accuracy  or  density  of  magnetic  data  will  not  be 
a  basis  for  classification  of  the  information. 
(2)  Magnetic  products  and  data  will  be  classified 
when: 
(a)   Required  by  host  country. 
i  /