Met
alM
appe
r: A
Mul
ti-Se
nsor
TEM
and
Mag
netic
Gra
diom
eter
Sys
tem
for U
XO D
etec
tion
and
Cla
ssifi
catio
n ES
TCP
Proj
ect M
M-0
603
Prin
cipa
l Inv
estig
ator
: D
r. M
ark
Prou
ty
Geo
met
rics,
Inc
San
Jose
, CA
m
arkp
@ge
omet
rics.
com
Obj
ectiv
e:
The
obje
ctiv
e of
thi
s pr
ojec
t is
to
com
mer
cial
ize
adva
nced
EM
I m
etal
det
ectin
g te
chno
logy
tha
t ha
s re
cent
ly e
mer
ged
from
ES
TCP,
SE
RD
P, a
nd
NAV
EO
DTE
CH
DIV
fun
ded
rese
arch
. W
e ha
ve a
ssem
bled
an
adva
nced
ele
ctro
-m
agne
tic in
duct
ion
(EM
I) in
stru
men
t for
UX
O d
etec
tion
and
char
acte
rizat
ion.
Th
e in
stru
men
t will
perfo
rm s
ubst
antia
lly b
ette
r th
an e
xist
ing
com
mer
cial
ly a
vaila
ble
in-
stru
men
ts.
Tech
nolo
gy D
escr
iptio
n: T
he M
etal
Map
per s
yste
m (r
ight
) con
sist
s of
:
• A
nten
na A
rray
- 3
orth
ogon
al tr
ansm
itter
loop
s (X
,Y,Z
) tog
ethe
r with
7 tr
i-axi
al re
-ce
iver
“cub
es”.
•
Ant
enna
Pla
tform
-
A st
rong
, du
rabl
e pl
atfo
rm c
onst
ruct
ed f
rom
sur
face
-re
info
rced
foam
. •
Man
-Por
tabl
e El
ectr
onic
s Pa
ckag
e -
Por
tabl
e ba
ttery
-pow
ered
dat
a ac
quis
ition
an
d tra
nsm
itter
ele
ctro
nics
pac
kage
. •
Inte
grat
ed S
oftw
are
- Acq
uisi
tion
softw
are
is in
tegr
ated
with
Geo
soft
Oas
is m
on-
taj™
and
inte
rpre
tatio
n so
ftwar
e to
faci
litat
e po
st-a
cqui
sitio
n Q
C, d
ata
disp
lay,
tar-
get l
ist m
anag
emen
t, an
d pa
ram
eter
ext
ract
ion.
Ex
pect
ed B
enef
its:
The
Met
alM
appe
r w
ill im
prov
e th
e qu
ality
of
UX
O s
ur-
veys
. Th
e in
stru
men
t and
its
softw
are
prov
ide
impr
ovem
ents
bot
h fo
r det
ectio
n su
r-ve
ys (
UX
O m
appi
ng o
r ra
w d
ig li
sts)
and
for
char
acte
rizat
ion
surv
eys
(sin
gle
targ
et c
lass
ifica
tion,
fals
e al
arm
red
uctio
n).
Ope
ratin
g in
its
stat
ic
mod
e, th
e M
etal
Map
per
can
para
met
eriz
e a
targ
et w
ith d
ata
colle
cted
at a
sin
gle
field
poi
nt.
This
impr
oves
res
ults
sin
ce it
elim
inat
es th
e st
rict
requ
irem
ents
for g
eo-lo
catio
n (<
1 c
m) a
nd p
latfo
rm a
ttitu
de m
easu
rem
ents
that
are
requ
ired
whe
n pr
oces
sing
dat
a fro
m m
ultip
le fi
eld
poin
ts.
Dat
a Q
C/Q
C a
nd D
ispl
ay
Met
alM
appe
r da
ta a
re m
ost
effic
ient
ly s
tore
d as
bin
ary
data
file
s in
a p
ropr
ieta
ry f
orm
at.
The
DLL
lib
rary
(E
M3D
Dat
a.D
LL)
allo
ws
exte
rnal
pro
gram
s su
ch a
s M
M/R
MP
and
Geo
soft
Oas
is m
onta
j™ (
OM
) to
acc
ess
thes
e fil
es.
We
prov
ide
a se
t of c
usto
m G
eoso
ft E
xecu
tabl
es (G
X’s
) to
faci
litat
e th
e im
porta
tion
of ra
w d
ata
into
O
M a
nd fo
r the
cal
cula
tion
of b
asic
cor
rect
ions
.
Wei
ght:
39 lb
s *
Dim
ensi
ons:
8.5
x 9
.75
x 14
.5 in
B
atte
ry L
ife (L
i-Ion
): 4
-6 h
r
Blo
ck d
iagr
am o
f Met
alM
appe
r ele
ctro
nics
The
Met
alM
appe
r sy
stem
acq
uirin
g dy
nam
ic d
ata
at
Abe
rdee
n Pr
ovin
g G
roun
d (S
epte
mbe
r, 20
08)
M
etal
Map
per a
nten
na p
latfo
rm
(ski
d-m
ount
ed to
wed
con
figur
atio
n)
Met
alM
appe
r rec
eive
r cub
e lo
catio
ns
Ant
enna
Pla
tform
Th
e an
tenn
a pl
atfo
rm i
s fa
bric
ated
usi
ng p
last
ic o
n fo
am-c
ore
stru
ctur
al e
lem
ents
. Th
e re
sulti
ng s
truct
ure
is s
trong
, dur
able
, and
(r
elat
ivel
y) l
ight
-wei
ght.
The
pro
toty
pe w
eigh
s ap
prox
imat
ely
65
Kg
(143
lb)
. T
he c
art
can
be d
isas
sem
bled
for
shi
pmen
t. A
l-th
ough
dep
loye
d at
AP
G in
a s
kid-
mou
nted
con
figur
atio
n, th
e pl
at-
form
has
rem
ovab
le w
heel
s fo
r de
ploy
men
t as
a m
an-to
wed
pla
t-fo
rm.
Elec
tron
ics
Pack
age
Th
e el
ectr
onic
s pa
ckag
e co
nsis
ts o
f: 1.
Tra
nsm
itter
: Dig
ital c
ontro
l of f
requ
ency
, dut
y cy
cle,
and
sw
itch-
ing
betw
een
Tx lo
ops.
2. D
ata
Acq
uisi
tion
(DA
Q):
24-
chan
nel,
sim
ulta
neou
s sa
mpl
ing,
16
-bit,
250
kH
z A
DC
; syn
chro
nize
d di
gita
l I/O
; ser
ial I
/O; U
SB
; ful
ly
capa
ble
PC
(Win
dow
s);
oper
ated
rem
otel
y vi
a w
irele
ss li
nk to
con
-so
le d
ispl
ay.
3.Po
sitio
n &
Atti
tude
• G
eo-P
ositi
onin
g—R
TK G
PS
• A
ttitu
de:
Mod
ular
2-a
xis
acce
lero
met
er w
/ mag
netic
refe
renc
e
4. M
agne
tics
(Opt
ion)
- Th
e M
etal
Map
per c
an b
e co
nfig
ured
with
2
Geo
met
rics
Mod
el 8
22/8
23A
Cs
mag
neto
met
ers
for o
pera
tion
in
dual
-mod
e (E
M &
mag
netic
gra
dien
t).
Blo
ck d
iagr
am o
f Met
alM
appe
r sof
twar
e
Met
alM
appe
r Sof
twar
e
The
Met
alM
appe
r is
sup
porte
d w
ith t
hree
sof
twar
e pa
ckag
es p
rovi
ding
ser
vice
s fo
r D
ata
Acq
uisi
tion,
Ph
ysic
s-ba
sed
Inte
rpre
tatio
n, a
nd P
ost-a
cqui
sitio
n Pr
oces
sing
(Blo
ck D
iagr
am—
left)
. A
cqui
sitio
n so
ftwar
e su
ppor
ts a
ll as
pect
s of
dat
a ac
qui-
sitio
n, i
n-fie
ld d
ata
disp
lay
and
data
sto
rage
, an
d re
-tri
eval
/exp
ort t
o te
xt fi
les.
A
cust
om G
x in
Mon
taj i
m-
ports
sto
red
data
and
oth
er G
x’s
sim
plify
pro
cess
ing.
A
cces
s to
raw
dat
a is
pro
vide
d th
roug
h ex
pose
d M
icro
-so
ft .N
et i
nter
face
s.
Inte
rpre
tatio
n so
ftwar
e op
erat
es
inde
pend
ently
thro
ugh
the
.Net
inte
rface
s.
Phys
ics-
base
d In
terp
reta
tion
The
Met
alM
appe
r (M
M/R
MP
) phy
sics
-bas
ed in
terp
reta
tion
prog
ram
inco
rpor
ates
a s
tate
-of-t
he-a
rt pr
ogra
m d
e-ve
lope
d by
Tor
quil
Sm
ith (L
awre
nce
Ber
kele
y La
bs) f
or u
se w
ith th
e B
UD
sys
tem
. Th
e Fi
gure
bel
ow (B
) sho
ws
the
pola
rizab
ility
plo
ts fo
r the
targ
et a
ssoc
iate
d w
ith c
ell B
-3 o
f the
Cal
ibra
tion
Lane
s (Y
PG
) usi
ng th
e tra
nsie
nt
data
(A).
Dat
a Q
C/Q
C a
nd D
ispl
ay
Met
alM
appe
r dat
a ar
e m
ost e
ffici
ently
sto
red
as b
inar
y da
ta
files
in
a
Mic
roso
ft st
anda
rd
form
at.
Th
e D
LL
libra
ry
(EM
3DD
ata.
DLL
) al
low
s ex
tern
al p
rogr
ams
such
as
MM
/R
MP
and
Geo
soft
Oas
is m
onta
j™ (
OM
) to
acc
ess
thes
e fil
es.
We
prov
ide
a se
t of
cus
tom
Geo
soft
Exe
cuta
bles
(G
X’s
) to
faci
litat
e th
e im
porta
tion
of r
aw d
ata
into
OM
and
fo
r the
cal
cula
tion
of b
asic
cor
rect
ions
.
EM3D
Acqu
ire
Stor
age
*.TEM
Met
alM
appe
r
Stor
age
*.MDB
*.LBL
*.TEM
Inte
rpre
tatio
nAc
quis
ition
Geo
soft
Oas
is M
onta
j
Cust
om
GX’
s
Stor
age
*.GD
B
QA/
QC
Post
-Acq
Dis
play
s
RMP
(LBL
Inv
Eng
.)
Stor
age
*.MDL
Tran
sien
tDa
ta P
lots
File
Typ
es:
*.MD
B –
MS
-Acc
ess
Dat
a B
ase
*.LB
L –
BU
Ds
data
file
(Tex
t)*.T
EM –
MM
Dat
a Fi
le (
Bin
ary)
*.GD
B –
Geo
soft
Dat
a B
ase
*.MD
L –
MM
Tar
get M
odel
File
Inte
rface
*.CSV
EM3D
Data
Em3D
Plot
Real
-Tim
e Da
ta
Navi
gatio
n Ai
ds
Fiel
d D
emon
stra
tions
In
Jun
e, th
e M
etal
Map
per w
as te
sted
on
the
Blin
d Te
st G
rid a
t the
Sta
ndar
dize
d te
st s
ite a
t the
Yum
a P
rovi
ng
Gro
und.
In
thes
e te
sts,
the
Met
alM
appe
r det
ecte
d 10
0% o
f the
targ
ets
with
0%
bac
kgro
und-
alar
ms,
and
dis
-cr
imin
ated
100
% o
f the
ord
nanc
e ite
ms
with
a 4
9% p
roba
bilit
y of
fals
e-po
sitiv
e.
In S
epte
mbe
r, th
e M
etal
Map
per w
as te
sted
mor
e ex
tens
ivel
y at
the
new
ly r
econ
figur
ed te
st s
ite a
t the
Abe
r-de
en P
rovi
ng G
roun
d. S
urve
ys w
ere
com
plet
ed o
ver 5
.8 a
cres
and
ove
r 180
0 ta
rget
s w
ere
char
acte
rized
in
14 d
ays
of s
urve
ying
.
