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Full-Text Articles in Signal Processing
Design Approach To Use Platinum Rtd Sensor In Snow Temperature Measurements, Raman Attri
Design Approach To Use Platinum Rtd Sensor In Snow Temperature Measurements, Raman Attri
Raman K. Attri
The snow temperature measurement is a very critical area of hydrological instrumentation. The measured data is used to assess the run-off water, snow pack strength and snow avalanche. The hydrological and snow avalanche forecast models require that temperature be measured at different points in the snow pack, above the snow pack and below the snow pack. A state-of-the-art multi-point snow temperature measurement system has been designed and developed for this purpose. The type of the temperature sensor used is a critical aspect of this physical parameter instrumentation. After lot of study of various aspects of different temperature sensing elements, the …
Cramér-Rao Bounds For Estimating Range, Velocity, And Direction With An Active Array, Aleksandar Dogandžić, Arye Nehorai
Cramér-Rao Bounds For Estimating Range, Velocity, And Direction With An Active Array, Aleksandar Dogandžić, Arye Nehorai
Aleksandar Dogandžić
We derive Cramer-Rao bound (CRB) expressions for the range (time delay), velocity (Doppler shift), and direction of a point target using an active radar or sonar array. First, general CRB expressions are derived for a narrowband signal and array model and a space-time separable noise model that allows both spatial and temporal correlation. We discuss the relationship between the CRB and ambiguity function for this model. Then, we specialize our CRB results to the case of temporally white noise and the practically important signal shape of a linear frequency modulated (chirp) pulse sequence. We compute the CRB for a three-dimensional …