Title :
Threshold setting strategies for a quantized total power radiometer
Author :
Lehtomäki, Janne J. ; Juntti, Markku ; SAARNISAARI, Harri ; Koivu, Sami
Author_Institution :
Centre for Wireless Commun., Univ. of Oulu, Finland
Abstract :
We analyze the impact of a uniform quantizer on the false-alarm probability of a total power radiometer. Different possibilities to set the detection threshold are discussed. The main emphasis is on methods that use the estimated noise level. In particular, we analyze the cell-averaging (CA) constant false-alarm rate threshold setting strategy. The numerical results show that the CA strategy offers the desired false-alarm probability.
Keywords :
noise measurement; probability; quantisation (signal); radiometers; signal detection; cell-averaging constant; false-alarm probability; noise level estimation; power radiometer; signal detection; threshold setting strategy; uniform quantizer; Detectors; Helium; Monitoring; Noise level; Probability; Quantization; Radiometry; Signal detection; Signal processing; Statistics; Constant false-alarm rate (CFAR); detection threshold; quantization; radiometer; signal detection;
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2005.855521
