This paper presents a novel reference-free ultrasonic indoor location system. Unlike most
previous proposals, the mobile device (MD) determines its own position based only on …

A head attitudes measurement system based on 3-axis micro-accelerometer and 3-axis
micro-magnetoresistive sensor is designed and developed using for thermal imager setup of …

This paper introduces the structure and hardware circuit design of reversing radar system.
The real-time display of reversing distance is made by LCD, and different voice prompts are …

The accuracy of quaternion method in strap-down inertial navigation used for posture
recognition is subjected to sensor data drift. Analysis shows that quaternion is a state …

The important indicators of multichannel ultrasonic ranging system are correlation
characteristics and energy efficiency. The excitation sequences with good correlation …

A crosstalk elimination method by using the optimal binary excitation sequences modulated
with chaotic codes, which includes chaotic binary amplitude shift keying (c-BASK), chaotic …