Hypotheses

The Status

The OR rule decisions

1

$\left(H_0;H_0\right)$

Decide $H_0$ when $H_0$ is true

Probability of No Detection

2

$\left(H_0;H_1\right)$

Decide $H_0$ when $H_1$ is true

Probability of Missed Detection $\left(P_{MD}\right)$

3

$\left(H_1;H_0\right)$

Decide $H_1$ when $H_0$ is true

Probability of False Alarm $\left(P_{FA}\right)$

4

$\left(H_1;H_1\right)$

Decide $H_1$ when $H_1$ is true

Probability of Detection $\left(P_D\right)$