Measurement device, measurement system, measurement method, and program

The measurement device includes a light emitting unit, a light receiving unit, a specifying unit, and a calculating unit. The light-emitting unit emits light to an object to be irradiated through which a fluid flows. The light receiving unit receives interference light including light scattered by an object to be irradiated, and outputs an output signal according to the intensity of the interference light. The specifying unit acquires a characteristic quantity indicating a characteristic of a signal waveform of the output signal, and specifies an abnormal signal included in the output signal on the basis of the acquired characteristic quantity. The calculation unit calculates a flow state value indicating the flow state of the fluid on the basis of a signal other than the abnormal signal among the output signals. 测定装置具备发光部、受光部、确定部以及算出部。发光部对在内部流过流体的被照射物照射光。受光部接受包含在被照射物散射的光的干涉光，并输出与该干涉光的强度相应的输出信号。确定部获取表示输出信号的信号波形的特性的特性量，基于所获取的该特性量来确定输出信号中所含的异常信号。算出部基于输出信号中的异常信号以外的信号来算出表示流体的流动的状态的流动状态值。