The patterns of ultrasonic backscattered echoes represent valuable information pertaining to
the geometric shape, size, and orientation of the reflectors as well as the microstructure of …

HYBRID rockets are propulsion systems in which one of the two propellants is stored in
liquid phase (usually the oxidizer) and the other in solid phase. The oxidizer is injected into …

PROPULSION systems such as solid and liquid propellant rockets and airbreathing engines,
like ramjets, are known to have a tendency toward unstable operation, that is, toward what is …

The accuracy and efficiency of shooting reports constitute indispensable cornerstones in
modern military training and shooting fields. However, traditional shooting report systems …

A new digital signal-processing method for ultrasonic time-of-flight (TOF) estimation is
presented. The method applies the discrete extended Kalman filter (DEKF) to the acquired …

A class of baseband correlation receivers is developed for estimating the time-of-flight of a
narrowband signal. In contrast to conventional correlation receivers that contain a perfectly …

In this paper we describe our approach to the design of proximity sensor arrays. Each
sensing element of the proximity sensor array is a composite sensor, ie a sensor which is …

A new digital signal-processing (DSP) method for ultrasonic time-of-flight (TOF) estimation is
presented hereinafter. The method applies a traditional quadrature-demodulation scheme to …

Accurate ranging and real-time temperature monitoring are essential for metrology and
safety in electrical conduit applications. This paper proposes an acoustic time-of-flight (TOF) …

A practical low-cost acoustic range-finding method is presented, which provides a high-
speed and high-accuracy solution for distance measurement. It is based on the linear phase …