Title :
Detection of weak, broadband signals under Doppler-scaled, multipath propagation
Author_Institution :
Michigan Univ., Ann Arbor, MI, USA
Abstract :
The detection of weak, broadband signals under Doppler-scaled, multipath propagation is addressed. In general, the received signal may contain both strong and weak path receptions. The ambiguities (i.e., floor level or 2-D sidelobes) of the strong paths may interfere with the detection of the weak paths. In this study, the strong paths were regarded as the unwanted signals which must be eliminated in order to detect the weaker paths. The proposed method is a simple yet effective means for eliminating the ambiguities associated with the strong paths without significantly affecting the weak paths. This method has the advantage that removing the strong paths at a single Doppler channel is equivalent to removing the entire floor level associated with the strong paths
Keywords :
Doppler effect; radiowave propagation; signal detection; 2-D sidelobes; Doppler channel; Doppler scaled multipath propagation; ambiguities; broadband signal detection; floor level; received signal; strong path reception; weak path receptions; weak signal; Delay; Doppler radar; Equations; Filling; Frequency; Matched filters; Narrowband; Noise cancellation; Noise level; Reverberation;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1992. ICASSP-92., 1992 IEEE International Conference on
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-0532-9
DOI :
10.1109/ICASSP.1992.226020