noun
study period; survey period; investigation period
The time frame during which a survey, study, or investigation is conducted. Often used in computing and research contexts.
調査期間は来月の末までです。
The survey period is until the end of next month.
この調査期間中にデータを収集します。
We will collect data during this study period.
Compound of 調査 (chōsa, 'investigation, survey') and 期間 (kikan, 'period, term').