Euclid. NISP 信号估计器的性质与性能
天体物理仪器与方法
2026-02-04 v1
摘要
欧几里得太空船位于太阳-地球系统的第二个拉格朗日点，搭载了近红外光谱仪和光度计 (NISP) 仪器。NISP 配备由 16 个 HgCdTe 基 detector 组成的马赛克，用于获取近红外光度和光谱数据。为满足航天器对计算资源和遥测带宽的限制，近红外信号通过专用硬件-软件体系结构在航天器上处理，以满足欧几里得数据质量要求的严苛要求。一套自定义应用软件运行在两个 NISP 数据处理单元上，实现 NISP 信号估计器：一种为量产准确流量测量值并通过 quality factor 参数同时估计信号估计质量的专用算法。本文通过评估 NISP 仪器在早期飞行作业中的性能来研究 NISP 信号估计器的性质。首先，我们重访了推断近红外信号所基于的假设，通过蒙特卡罗模拟研究信号估计器主要系统atics 的来源。然后，我们测试了 NISP 信号估计器的飞行性能。结果表明，99% 的 NISP 像素阵列系统 bias 小于 0.01 e/s，远低于估计信号的噪声预算。我们还推导出 NISP 信号估计器方差的解析表达式，证明其有效性，特别是在未预先计算协方差矩阵时。最后，我们提供了一个稳健的统计框架来解释 QF 参数，分析其对信号估计器 bias 的依赖性，并展示其对 NISP detector 上的 cosmic ray 击中敏感性。我们的发现证实了关于 NISP 信号估计器的先前结果，并建议一种基于飞行数据与模拟模拟一致性的一级修正。
引用
@article{arxiv.2602.03574,
title = {Euclid. Properties and performance of the NISP signal estimator},
author = {Euclid Collaboration and F. Cogato and B. Kubik and R. Barbier and S. Conseil and E. Medinaceli and Y. Copin and E. Franceschi and L. Valenziano and N. Aghanim and B. Altieri and S. Andreon and N. Auricchio and C. Baccigalupi and M. Baldi and A. Balestra and S. Bardelli and P. Battaglia and A. Biviano and E. Branchini and M. Brescia and J. Brinchmann and S. Camera and G. Cañas-Herrera and V. Capobianco and C. Carbone and J. Carretero and S. Casas and M. Castellano and G. Castignani and S. Cavuoti and A. Cimatti and C. Colodro-Conde and G. Congedo and C. J. Conselice and L. Conversi and L. Corcione and A. Costille and F. Courbin and H. M. Courtois and R. da Silva and H. Degaudenzi and G. De Lucia and H. Dole and F. Dubath and X. Dupac and S. Dusini and A. Ealet and S. Escoffier and M. Farina and R. Farinelli and F. Faustini and S. Ferriol and F. Finelli and N. Fourmanoit and M. Frailis and M. Fumana and S. Galeotta and K. George and W. Gillard and B. Gillis and C. Giocoli and J. Gracia-Carpio and A. Grazian and F. Grupp and S. V. H. Haugan and W. Holmes and F. Hormuth and A. Hornstrup and P. Hudelot and K. Jahnke and M. Jhabvala and E. Keihänen and S. Kermiche and A. Kiessling and R. Kohley and M. Kümmel and M. Kunz and H. Kurki-Suonio and A. M. C. Le Brun and S. Ligori and P. B. Lilje and V. Lindholm and I. Lloro and G. Mainetti and D. Maino and E. Maiorano and O. Mansutti and S. Marcin and O. Marggraf and M. Martinelli and N. Martinet and F. Marulli and R. J. Massey and S. Mei and Y. Mellier and M. Meneghetti and E. Merlin and G. Meylan and A. Mora and M. Moresco and L. Moscardini and C. Neissner and S. -M. Niemi and C. Padilla and S. Paltani and F. Pasian and K. Pedersen and W. J. Percival and V. Pettorino and S. Pires and G. Polenta and M. Poncet and L. A. Popa and F. Raison and A. Renzi and J. Rhodes and G. Riccio and E. Romelli and M. Roncarelli and C. Rosset and E. Rossetti and R. Saglia and Z. Sakr and A. G. Sánchez and D. Sapone and B. Sartoris and M. Schirmer and P. Schneider and M. Scodeggio and A. Secroun and G. Seidel and S. Serrano and P. Simon and C. Sirignano and G. Sirri and L. Stanco and J. Steinwagner and P. Tallada-Crespí and D. Tavagnacco and A. N. Taylor and I. Tereno and S. Toft and R. Toledo-Moreo and F. Torradeflot and I. Tutusaus and J. Valiviita and T. Vassallo and A. Veropalumbo and Y. Wang and J. Weller and A. Zacchei and F. M. Zerbi and E. Zucca and M. Ballardini and M. Bolzonella and E. Bozzo and C. Burigana and R. Cabanac and M. Calabrese and A. Cappi and T. Castro and J. A. Escartin Vigo and G. Fabbian and L. Gabarra and J. García-Bellido and V. Gautard and S. Hemmati and J. Macias-Perez and R. Maoli and J. Martín-Fleitas and N. Mauri and R. B. Metcalf and P. Monaco and A. Pezzotta and M. Pöntinen and I. Risso and V. Scottez and M. Sereno and M. Tenti and M. Tucci and M. Viel and M. Wiesmann and Y. Akrami and G. Alguero and I. T. Andika and G. Angora and S. Anselmi and M. Archidiacono and F. Atrio-Barandela and L. Bazzanini and D. Bertacca and M. Bethermin and F. Beutler and A. Blanchard and L. Blot and M. Bonici and S. Borgani and M. L. Brown and S. Bruton and A. Calabro and B. Camacho Quevedo and F. Caro and C. S. Carvalho and Y. Charles and A. R. Cooray and O. Cucciati and S. Davini and F. De Paolis and G. Desprez and A. Díaz-Sánchez and S. Di Domizio and J. M. Diego and V. Duret and M. Y. Elkhashab and A. Enia and Y. Fang and A. G. Ferrari and A. Finoguenov and A. Fontana and A. Franco and K. Ganga and T. Gasparetto and E. Gaztanaga and F. Giacomini and F. Gianotti and G. Gozaliasl and A. Gruppuso and M. Guidi and C. M. Gutierrez and A. Hall and H. Hildebrandt and J. Hjorth and J. J. E. Kajava and Y. Kang and V. Kansal and D. Karagiannis and K. Kiiveri and J. Kim and C. C. Kirkpatrick and S. Kruk and M. Lattanzi and L. Legrand and F. Lepori and G. Leroy and G. F. Lesci and J. Lesgourgues and T. I. Liaudat and M. Magliocchetti and A. Manjón-García and F. Mannucci and C. J. A. P. Martins and L. Maurin and M. Miluzio and A. Montoro and C. Moretti and G. Morgante and S. Nadathur and K. Naidoo and P. Natoli and A. Navarro-Alsina and S. Nesseris and L. Pagano and E. Palazzi and D. Paoletti and F. Passalacqua and K. Paterson and L. Patrizii and A. Pisani and D. Potter and G. W. Pratt and S. Quai and M. Radovich and W. Roster and S. Sacquegna and M. Sahlén and D. B. Sanders and E. Sarpa and A. Schneider and D. Sciotti and E. Sellentin and L. C. Smith and K. Tanidis and F. Tarsitano and G. Testera and R. Teyssier and S. Tosi and A. Troja and A. Venhola and D. Vergani and G. Verza and P. Vielzeuf and S. Vinciguerra and N. A. Walton and A. H. Wright},
journal= {arXiv preprint arXiv:2602.03574},
year = {2026}
}