A simulation pipeline for the Planck mission
A simulation pipeline for the Planck mission
复制标题
普朗克任务的模拟流程
DOI：
10.1051/0004-6361:20053413
复制
发表时间：
2005
影响因子：
6.5
通讯作者：
T. Ensslin
中科院分区：
文献类型：
--
作者：
M. Reinecke;K. Dolag;R. Hell;M. Bartelmann;T. Ensslin
我们描述了一组数值工具来模拟普朗克卫星的输出数据。这些开始与CMB的天空在选定的宇宙学的生成，添加在各种前景源，卷积的天空信号与任意的，甚至非对称和偏振光束图案，推导出的时间顺序的数据流测量的探测器取决于所选择的卫星扫描策略，并包括噪声信号的个人探测器和电子系统。模拟产品需要开发、验证、优化和验证普朗克使命的所有数据处理和科学分析步骤的准确性和性能，包括数据处理、数据完整性检查、校准、地图制作、物理成分分离和功率谱估计。此外，模拟允许详细研究许多随机和系统性影响对科学结果的影响。仿真的有效实现允许建立信号方差和协方差的扩展统计。
虽然是专门为普朗克使命开发的，但预计所采用的框架以及大多数模拟工具将用于其他实验和一般的CMB相关科学。
We describe an assembly of numerical tools to model the output data of the Planck satellite. These start with the generation of a CMB sky in a chosen cosmology, add in various foreground sources, convolve the sky signal with arbitrary, even non-symmetric and polarised beam patterns, derive the time ordered data streams measured by the detectors depending on the chosen satellite-scanning strategy, and include noise signals for the individual detectors and electronic systems. The simulation products are needed to develop, verify, optimise, and characterise the accuracy and performance of all data processing and scientific analysis steps of the Planck mission, including data handling, data integrity checking, calibration, map making, physical component separation, and power spectrum estimation. In addition, the simulations allow detailed studies of the impact of many stochastic and systematic effects on the scientific results. The efficient implementation of the simulation allows the build-up of extended statistics of signal variances and co-variances.
Although being developed specifically for the Planck mission, it is expected that the employed framework as well as most of the simulation tools will be of use for other experiments and CMB-related science in general.