Consistent Estimation of Pulse Delay For X-ray Pulsar Based Relative Navigation

被引：18

作者：

Emadzadeh, Amir A. ^{[1
]}

Golshan, A. Robert

Speyer, Jason L. ^{[2
]}

机构：

[1] Univ Calif Los Angeles, Dept Elect Engn, Los Angeles, CA 90024 USA

[2] Univ Calif Los Angeles, Mech & Aerosp Engn Dept, Los Angeles, CA 90024 USA

来源：

PROCEEDINGS OF THE 48TH IEEE CONFERENCE ON DECISION AND CONTROL, 2009 HELD JOINTLY WITH THE 2009 28TH CHINESE CONTROL CONFERENCE (CDC/CCC 2009) | 2009年

关键词：

D O I：

10.1109/CDC.2009.5399706

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

The relative navigation problem between two spacecraft in deep space is formulated based on employing X-ray pulsar signals. The proposed approach is to lock the detectors on the same pulsar and time-tag the detected X-ray photons. Then using the epoch folding procedure the observed pulsar rate functions on each spacecraft are retrieved and the time delay is estimated through a nonlinear least-squares (NLS) fitting of the empirical rate function to the known pulsar rate function. The relative distance between the space vehicles is proportional to the time delay. The pulsar signals are modeled mathematically and the epoch folding noise is characterized analytically. The mean and variance of the pulse delay estimator are calculated. The Cramer-Rao lower bound (CRLB) is also presented and the estimator's performance is compared against it. The analytical results are verified numerically by computer simulations.

引用

页码：1488 / 1493

页数：6

共 13 条

[1] COMMUNICATION UNDER POISSON REGIME
BARDAVID, I
[J]. IEEE TRANSACTIONS ON INFORMATION THEORY, 1969, 15 (1P1) : 31 - +
[2] Devroye L., 1986, NONUNIFORM RANDOM VA
[3] Emadzadeh Amir A., 2008, 2008 IEEE/ION Position, Location and Navigation Symposium - PLANS 2008, P714, DOI 10.1109/PLANS.2008.4570029
[4] Emadzadeh A. A., 2009, AIAA GUID NAV CONTR
[5] Emadzadeh A.A., 2007, 63 ANN M I NAVIGATIO, P454
[6] Emadzadeh AA, 2008, PROCEEDINGS OF THE 2008 NATIONAL TECHNICAL MEETING OF THE INSTITUTE OF NAVIGATION - NTM 2008, P119
[7] Golshan A. R., 2007, Institute of Navigation 63rd Annual Meeting, P413
[8] Hanson John, 2008, 2008 IEEE/ION Position, Location and Navigation Symposium - PLANS 2008, P704, DOI 10.1109/PLANS.2008.4570028
[9] Kay S. M., 1993, FUNDAMENTALS STAT SI, V1
[10] Lorimer D., 2001, BINARY MILLISECOND P

← 1 2 →