The design of the tri-axial magnetometer uses Anisotropic Magneto-Resistive (AMR) sensors which are co-located with offset compensating circuitry. The offset compensating circuitry nulls the characteristic offset voltage of the AMR sensor and enhances the sensors performance. The sensor provides x-, y- and z-axes magnetic field component measurements, as well as a sensor temperature measurement which is used for the temperature compensation of the magnetic field measurement.
Ideally mounted outside the spacecraft atthe end of a rigid boom the NewSpace magnetometer includes low noise, precision processing and analogue-to-digital conversion circuitry; all of which improves the linearity and reduces the drift sensitivity of the sensor head. The integrated processing circuitry and sensor head provides an accurate and stable magnetic field measurement at low power consumption. The power requirement is a regulated 5V DC supply while the measured x-, y- and z-axes magnetic field components are available as 0-5V analogue outputs or optionally on a digital serial interface.
Orthogonality: better than +/- 1°
Measurement range: +60,000nT to -60,000nT
Update rate: up to 10Hz
Noise density: <500pT RMS/Hz @1Hz
Power consumption: <700 mW
3-axis analogue output: 0-5V or Serial (RS422 or I2C) options
Temperature output 0-5V
Operating temperature: -35°C to +75°C
15g rms random vibration (qualification levels)
10krad total dose (component level)