SDI-141 North Finder/ seeker

SDI-141 is a North seeker constituted with dual degree of freedom dynamically tuned gyro, mechanical transmission and signal decoding circuit. Dual degree of freedom gyro has two basic features, procession and stable spin axis . Rotation axis of gyro remains the orientation relative to inertial space, oppositely, the earth rotates for its angular velocity . If taking the earth as standard, the gyro's axis will be found rotating relative to the earth. Therefore, the gyro can track and measure the angular velocity of the earth. North seekers take advantage of this different component of angular velocity on X and Y axis, then get the reference axis position info/then get the system's position info by the rate difference on X and Y sensitive axis.

 Features:

●Easy to operate

●automated north-seeking

●meet vehicle-mounted environment

Applications

●Antenna positioning

●Vehicle positioning

●Radar positioning

Performance

Azimuth measurement range	0°~360°
Azimuth measurement accuracy	0.06°1σ
Azimuth resolution	0.01°
North seeking time	3min
Prepare time	10min
Operation state	static
Tilt angle measurement range(option)	±8°
Tilt angle measurement accuracy(option)	±0.06°
Digital display	none

Communication ports

Serial ports	RS-422/RS-232
Baud rate	9600bps

Environmental

Operating temp	-40℃~60℃
Bump	3g   8~11ms half-sine wave

Electric

Input voltage	24~36VDC
Operating current	1A

Physical

Size	204×153×190 mm
Weight	＜8kg