MF3
North
Finder
–
Rapid
and
Autonomous
True
North
Determination
System
Product
Overview
The
MF3
North
Finder
is
an
electromechanical
integrated
system
designed
for
rapid
and
autonomous
true
north
determination.
It
calculates
the
angle
between
the
gyroscope's
main
axis
and
Earth's
true
north
by
tracking
Earth's
rotation
angular
velocity,
providing
precise
azimuth
information
for
carriers.
Key
Specifications
|
Parameter
|
Value
|
|
North
seeking
time
|
3
min
/
2
min
(adjustable)
|
|
North
seeking
accuracy
(1σ)
|
0.5°
|
|
Interface
options
|
TTL/RS232/RS422/RS485
|
|
Operating
temperature
|
-20℃
to
+50℃
|
|
Storage
temperature
|
-40℃
to
+60℃
|
|
MTBF
|
≥
10,000
hours
|
|
MTTR
|
≤
30
minutes
|
Technical
Details
System
Components
-
Gyroscope
for
Earth
rotation
tracking
-
Accelerometer
for
tilt
measurement
-
Mechanical
rotation
control
device
-
Embedded
computer
for
signal
processing
Operation
Process
After
power-on,
the
system
performs
automatic
self-check.
Upon
successful
verification,
it
initiates
autonomous
north
seeking
and
transmits
results
to
the
upper
computer
upon
completion.
|
Parameter
|
MF307EX
Specification
|
|
Tilt
angle
range
|
±15°
|
|
Heading
maintenance
|
3°/h
(Zero
bias
stability
10s
1σ)
|
|
Power
requirements
|
9.5-36VDC
(Min.
0.3mm²
power
line
diameter)
|
|
Current
consumption
|
0.5A
typical,
1A
max
|
|
Environmental
conditions
|
≤95%
relative
humidity
|
|
Insulation
resistance
|
≥10
MΩ
(circuit-to-circuit
and
circuit-to-shell)
|
|
Construction
|
Stainless
steel
+
aluminum
alloy
|
|
Weight
|
≤1.1
kg
(excluding
cable)
|
Connection
Interfaces
RS232/TTL
Wiring
(7-core)
![RS232/TTL 7-core wiring diagram for MF3 North Finder]()
RS485
Wiring
(7-core)
![RS485 7-core wiring diagram for MF3 North Finder]()
RS422
Wiring
(9-core)
![RS422 9-core wiring diagram for MF3 North Finder]()
