Mendeley
TY  _  JOUR
ID  -  1402122446154
TI  -  Message Extraction for 9th Pulse Standard of eLoran Navigation System
JO  -  Nashriyyah -i Muhandisi -i Barq va Muhandisi -i Kampyutar -i Iran
JA  -  ES
LA  -  fa
SN  -  16823745
AU  -  Lotfalizade Mehri
AU  -  Shafiee Neyestanak Morteza
AU  -  Nezafati Mohammad Bagher
AD  -  دانشگاه صنعتی مالک اشتر
AD  -  گروه آموزشی الکترونیک و الکترواپتیک
AD  -  پژوهشگاه دانش‌های بنیادی
Y1  -  
PY  -  
VL  -  3
IS  -  
SP  -  174
EP  -  184
KW  -  9th pulse eLoran
KW  -   envelope shift
KW  -   phase shift
KW  -   enhanced Loran (eLoran)
KW  -   Pulse Position Modulation (PPM).
DO  -  
N2  -  <p style="direction: ltr;"><strong>In the Standard of 9<sup>th</sup> pulse enhanced Loran (eLoran) system, an additional pulse is incorporated into the navigation pulse group for data transmission. The process of extracting messages from the Loran signal involves two stages: first, determining time delay of the data pulse relative to its original position, and second, decoding the data. This paper proposes a method for message extraction using the 9<sup>th</sup> pulse standard. Time delay of the data pulse is calculated in two steps, involving envelope shift and phase shift utilizing matched and fractional filters, respectively. Following this, Reed-Solomon (RS) decoding is applied, leading to final message extraction. Furthermore, to enhance pulse delay estimation, particularly in noisy and interference conditions, the reference pulse is chosen as average of the eight pulses preceding the data pulse, resulting in a unique reference pulse for each symbol extraction. Evaluation results show that the error rate before decoding decreases from 0.08 to 0.003 as the signal-to-noise ratio increases from 7 to 15 dB, with a significant reduction in errors after RS correction.</strong></p>
UR  - rimag.ir/en/Article/46154
L1  - rimag.ir/en/Article/Download/46154
ER  -  
