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rate voltages are generated and routed to the
sensors. Stabilization signals are provided from the inertial
navigation system or, if it fails, from the SAHRS.
Operatingr ate signals are.d eterminedt ?om inertial navigation
and radar altimeter inputs. A semiautomatic
backup method of generating Vg/H signals is available
if the inertial navigation system fails. A titlly manual
option is available through the CPS if other components
(including the data converter) fail. Maximum automatic
Vg/H is 1.42 knots per foot.
IftheaircmftiscarryingaTARPSpod,negativeAGL
causes the MAN Vg/H light on the CPS panel to be lit.
This light goes out when AGL becomes positive. Without
a TARPS pod on the aircraft, negative AGL does not
light the MAN Vg/H light. CADC or computer failure,
however, causes the light to be lit with or without a pod
aboard.
Reconnaissances ystem integration is accomplished
through digital information &om the data converter,
which is translated into bii or alphanumeric form and
added to preset information and real time, which is adjusted
prior to flight. Code matrix boxes am printed on
all imagery in either binaty or alphanumeric form. Integration
information includes data, squadmn and detachment,
sortie, sensor identification, system altitude,
heading, roll, pitch, latitude, long&ode.,r adar altitude,
time, inertial navigation system status, relative drift to
ground track, and Vg/H.
ORIGINAL 22.28
NAVAIR 0%FMAAD-1
CHAPTER 23
Navigation Command
and Control Grid
23.1 NAVIGATION CObWAND AND
CONTROL GRID
NAV GRID enhancefsle eta ir defensbey providing
navigationc ommanda nd controli nformationd uring
combaat ir patrolo perationsa ndf or fleetd efenseo f a
specificf ixed position.N AV GRID pmvidesa ircraft
positionr elativet o a geographirce ferencep oint (grid
origin)t hat is commonto all fleet defenseu nits.T his
eliminatedse pendencoen n avigationa idss ucha st acan
for positionre ferenced uringA AW operationsC. ombat
air patrolsu singN AV GRID canr eportt argetc ontacts
usingg rid coordinateosr rangea ndb earingr elativet o
grid origin (TID only) in addition to normal reports
referencetdo own-aircrafpt osition.
23.1.1 NAV GRID Data Entry. Inordertodisplaya
NAV GRID, the RIO must first defme the following
parameters:
1. Grid origin,e itheri n latitudea ndl ongitudec oordinateso
r as a rangea nd bearingf rom own-air-
Cliltl.
2. Grid heading(t hreata xis),i n degreesf,r om 0 to
359O(m agnetic).
3. Grid coveragea ngle( throats ector, in degrees,
from 00t o 18OOG). ridh eadingw ill alwaysd efme
the centero f the totalg ridc overage.
4. Numbero f grid sectorsf,r om 1 to 6. Total grid
coveragea ngled ividedb y the numbero f sectors
yieldst he angulacr overageo f eachs ector.
Grid pammetercsa nb e enteredv ia the DEU or the
DD computear ddrespsa nel.T heD EUN AV GRJDp arametersa
reu sedf or NAV GRID entriesa nda ret he
primary entry &vice with the DD as the backup.
23.1.1.1 DEU Data Entry Procedures. (See
Figure 23-l.)
1. Fromt heD EU menup age,s elecNt AV GRID.
2. Using the NAV GRID page, enter the following
parameters:
a. Latitudea ndl ongitude& AT, LONG) of grid
origin,o r mngea ndb earing(R NG,B RG)f rom
own- to grid origin.
b. Threata xish eading(H DG) (00t o 359’).
c. Gridc overagaen gle(C OWL)( 0’ to 180”).
d. Number of grid secton (SECT) (1 to 6).
23.1 .1.2 DD Data Entry Procedures
l.OntheDD,presstheMFKpushtiletobringupthe
MFK menu on the display.
2. Ont heM FK menu,s electth e SPLl egendto bring
up the SPL menu on the display.
3. SelecNt AV GRID legendo n the SPLm enu( Figure
23-2).
4. Ont heD D keyboarde, nter:
a. Latitudea ndl ongitude( LAT, LONG) of grid
origin,o r rangea ndb earing(R NG,B RG)B orn
owmairc&to grid origin.
b. Azimuths canc overage(g rid coveragaen gle)
(ALT) (0” to 180’).
c. Azimuth scan center (threat axis heading)
(HDO) (00 to 3590).
d. Numbero f grid sectors(N BR) (1 to 6).
28-I
NAVAIR OI-FWAAD-1
TYPICAL DATA ENTRY DISPLAYS
NAV QRID SSLE-ATA
KEYSDIN.
*ONLY IliE RESPECTIVE CHARACTER
LEGENDS (S. -, w, N, +, + OR BLANK)
APPUCASLE TO THE PARAWYSR
SELECYSD WILL APPEAR ON THE
OPTION DISPLAY LEGSND
GRID. LAT
N81’?5.36
NA” GRID-LONG
NA” GRID. IXWR
112.5
NAV QRlD . BRQ
NAV GRID-SECT
GRlD - HW
Figure 23-l. DEU NAV GRID Data Enlry - Typical
ORIGINAL 23-2
NAVAIR 01.F14AAD.1
　
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