Precession Azimuth Sensing with Low-Noise Molecular Electronics Angular Sensors

Table 1

Technical parameters of molecular electronic angular motion sensor.

Parameter	Molecular electronic angular motion sensor	Molecular electronic angular accelerometer
Transducer diameter	50 mm	9 mm
Output signal type	Analog, nondifferential, proportional to angular velocity	Analog, nondifferential, proportional to angular acceleration
Photo (Figure 4 MET 50 mm; Figure 5 MET 9 mm)	See Figure 4	See Figure 5
Service band	30 sec – 20 Hz	0–50 Hz
Transduction coefficient	50 B/(rad/sec)	0.5 B/(rad/sec^2)
Maximum bandpass flatness in service band	±0.4 dB	±0.5 dB
Maximum output signal	±5 V	±10 V
Maximal measured signal with harmonic distortions of <2%	0.01 rad/sec	5.2 rad/sec^2
Noise spectral density in the frequency range of 0.01–3 Hz [23, 24]	7.5 · 10^−7 rad/(sec^2·√Hz)	10^−4 rad/(sec^2·√Hz)
Operating temperature range	−12–+55°C	−12–+55°C
Maximum error of temperature compensation in service band	<10%	<3%
Possible installation angle	Any	Any
Mass	50 g	8 g
Power	12 V	12 V
Input	5 mA	1.4 mA