Besides these , based on basic parameters of iriss , the system performance is evaluated with the johnson concept after the important system performance indexes are modeled 同時(shí),根據(jù)系統(tǒng)的基本參量建立了系統(tǒng)基本性能參數(shù)模型,利用約翰遜準(zhǔn)則對(duì)系統(tǒng)的綜合探測(cè)能力進(jìn)行了評(píng)估。