By H. Vincent Poor
Crucial history examining for engineers and scientists operating in such fields as communications, keep an eye on, sign, and picture processing, radar and sonar, radio astronomy, seismology, distant sensing, and instrumentation. The ebook can be utilized as a textbook for a unmarried path, in addition to a mixture of an introductory and a sophisticated direction, or maybe for 2 separate classes, one in sign detection, the opposite in estimation.
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Extra resources for An introduction to signal detection and estimation
However, in Eq. 28a if a = a = a = · · · = 0 1 2 an−1 = 0, then it follows from Eq. 28ac that determination of the present value of y[k] does not require the past values y[k − 1], y[k − 2], . , etc. For this reason when ai = 0, (i = 0, 1, . . , n − 1), the difference Eq. 28a is nonrecursive. This classification is important in designing and realizing digital filters. In this discussion, however, this classification is not important. The analysis techniques developed here apply to general recursive and nonrecursive equations.
The following example demonstrates this procedure. 5 For this reason Eq. 28a is called a recursive difference equation. However, in Eq. 28a if a = a = a = · · · = 0 1 2 an−1 = 0, then it follows from Eq. 28ac that determination of the present value of y[k] does not require the past values y[k − 1], y[k − 2], . , etc. For this reason when ai = 0, (i = 0, 1, . . , n − 1), the difference Eq. 28a is nonrecursive. This classification is important in designing and realizing digital filters. In this discussion, however, this classification is not important.
The right-hand side of Eq. 27 consists of the input at instants k +m, k +m−1, k +m−2, and so on. For a causal equation, the solution cannot depend on future input values. This shows 4 Another minor problem is that because the classical method yields total response, the auxiliary conditions must be on the total response, which exists only for t ≥ 0+ . In practice we are most likely to know the conditions at t = 0− (before the input is applied). Therefore, we need to derive a new set of auxiliary conditions at t = 0+ from the known conditions at t = 0− .