التفاصيل البيبلوغرافية
| العنوان: |
Ranging Sensor Fusion in LISA Data Processing: Treatment of Ambiguities, Noise, and On-Board Delays in LISA Ranging Observables |
| المؤلفون: |
Reinhardt, Jan Niklas, Staab, Martin, Yamamoto, Kohei, Bayle, Jean-Baptiste, Hees, Aurélien, Hartwig, Olaf, Wiesner, Karsten, Heinzel, Gerhard |
| المساهمون: |
Systèmes de Référence Temps Espace (SYRTE), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
| بيانات النشر: |
HAL CCSD |
| سنة النشر: |
2023 |
| مصطلحات موضوعية: |
time delay: interferometer, laser: frequency, LISA, noise, fusion, calibration, boundary condition, suppression, data analysis method, numerical calculations, [PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], geo, phil |
| الوصف: |
International audience ; Interspacecraft ranging is crucial for the suppression of laser frequency noise via time-delay interferometry (TDI). So far, the effect of on-board delays and ambiguities in the LISA ranging observables was neglected in LISA modelling and data processing investigations. In reality, on-board delays cause offsets and timestamping delays in the LISA measurements, and PRN ranging is ambiguous, as it only determines the range up to an integer multiple of the pseudo-random noise (PRN) code length. In this article, we identify the four LISA ranging observables: PRN ranging, the sideband beatnotes at the interspacecraft interferometer, TDI ranging, and ground-based observations. We derive their observation equations in the presence of on-board delays, noise, and ambiguities. We then propose a three-stage ranging sensor fusion to combine these observables in order to gain optimal ranging estimates. We propose to calibrate the on-board delays on ground and to compensate the associated offsets and timestamping delays in an initial data treatment (stage 1). We identify the ranging-related routines, which need to run continuously during operation (stage 2), and implement them numerically. Essentially, this involves the reduction of ranging noise, for which we develop a Kalman filter combining the PRN ranging and the sideband beatnotes. We further implement crosschecks for the PRN ranging ambiguities and offsets (stage 3). We show that both ground-based observations and TDI ranging can be used to resolve the PRN ranging ambiguities. Moreover, we apply TDI ranging to estimate the PRN ranging offsets. |
| نوع الوثيقة: |
report |
| اللغة: |
English |
| Relation: |
https://hal.science/hal-04171364 |
| الاتاحة: |
https://hal.science/hal-04171364 |
| Rights: |
undefined |
| رقم الانضمام: |
edsbas.6522129C |
| قاعدة البيانات: |
BASE |