book about signal detection

[BMWE]

hi

i'm looking for a good book about the signal detection.

in addition, i need help with ex 5.a (find the test explicitly) from the following:
**broken link removed**

 

[akvii]

Here are some of the books:

An Introduction to Signal Detection and Estimation (Springer Texts in Electrical Engineering)
by: H. Vincent Poor
http://ifile.it/6lgt3am/poor.djvu
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Principles of Signal Detection and Parameter Estimation
by: Bernard C. Levy
http://ifile.it/7cyxta6/principles_of_signal_detection_and_parameter_estimation__0387765425_.pdf
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Elementary Signal Detection Theory
by: Thomas D. Wickens
http://ifile.it/0c9d4zf/ESDT.pdf
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A Primer of Signal Detection Theory, 2004-11
by: D. Mcnicol
http://ifile.it/mv1c5ky/0805853235.pdf
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Detection Theory: Applications and Digital Signal Processing
by: Ralph D. Hippenstiel
http://ifile.it/tg5w8zm/0849304342.zip