Paper Abstract and Keywords |
Presentation |
2015-10-09 14:00
Study about multi-channelization in ultrasonic distance measurement using LFM signal coded by M-sequence Kota Yamanaka, Shinnosuke Hirata, Hiroyuki Hachiya (Tokyo Tech) US2015-60 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
In ultrasonic distance measurement by the pulse-echo method, the signal-to-noise ratio (S/N) of the received echo and the resolution of the time of flight (TOF) are improved by employment of pulse compression.
In this research, pulse compression using a maximum-length sequence (M-sequence), which is one of the pseudo-random sequences, has been studied.
An M-sequence is a sequential binary code which is generated from a linear feedback shift register (LFSR).
In pulse compression using an M-sequence, the amplitude or phase of the transmitted signal is modulated by the M-sequence code.
Then, the received signal is correlated with the M-sequence code.
Furthermore, multi-channel concurrent measurement is enabled using transmitted signals which are coded by different M-sequences from different LFSRs.
In the case of a lower-order M-sequence, however, the number of measurement channel, which is the kind of LFSR, is not enough.
In this report, the method of coding of linear-frequency-modulated (LFM) signals, which is one of the frequency-sweep modulated signals, is discribed.
The number of M-sequence codes which are taken from the M-sequence is sequence length.
In case LFM signals are coded by these M-sequence codes, the coded signals can be used as different transmitted signals. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
multi-channel concurrent measurement / pulse compression / M-sequence / LFM signal / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 115, no. 246, US2015-60, pp. 13-18, Oct. 2015. |
Paper # |
US2015-60 |
Date of Issue |
2015-10-02 (US) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
Download PDF |
US2015-60 |
Conference Information |
Committee |
US |
Conference Date |
2015-10-09 - 2015-10-09 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Kanazawa Institute of Technology |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
General |
Paper Information |
Registration To |
US |
Conference Code |
2015-10-US |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Study about multi-channelization in ultrasonic distance measurement using LFM signal coded by M-sequence |
Sub Title (in English) |
|
Keyword(1) |
multi-channel concurrent measurement |
Keyword(2) |
pulse compression |
Keyword(3) |
M-sequence |
Keyword(4) |
LFM signal |
Keyword(5) |
|
Keyword(6) |
|
Keyword(7) |
|
Keyword(8) |
|
1st Author's Name |
Kota Yamanaka |
1st Author's Affiliation |
Tokyo Institute of Technology (Tokyo Tech) |
2nd Author's Name |
Shinnosuke Hirata |
2nd Author's Affiliation |
Tokyo Institute of Technology (Tokyo Tech) |
3rd Author's Name |
Hiroyuki Hachiya |
3rd Author's Affiliation |
Tokyo Institute of Technology (Tokyo Tech) |
4th Author's Name |
|
4th Author's Affiliation |
() |
5th Author's Name |
|
5th Author's Affiliation |
() |
6th Author's Name |
|
6th Author's Affiliation |
() |
7th Author's Name |
|
7th Author's Affiliation |
() |
8th Author's Name |
|
8th Author's Affiliation |
() |
9th Author's Name |
|
9th Author's Affiliation |
() |
10th Author's Name |
|
10th Author's Affiliation |
() |
11th Author's Name |
|
11th Author's Affiliation |
() |
12th Author's Name |
|
12th Author's Affiliation |
() |
13th Author's Name |
|
13th Author's Affiliation |
() |
14th Author's Name |
|
14th Author's Affiliation |
() |
15th Author's Name |
|
15th Author's Affiliation |
() |
16th Author's Name |
|
16th Author's Affiliation |
() |
17th Author's Name |
|
17th Author's Affiliation |
() |
18th Author's Name |
|
18th Author's Affiliation |
() |
19th Author's Name |
|
19th Author's Affiliation |
() |
20th Author's Name |
|
20th Author's Affiliation |
() |
Speaker |
Author-1 |
Date Time |
2015-10-09 14:00:00 |
Presentation Time |
30 minutes |
Registration for |
US |
Paper # |
US2015-60 |
Volume (vol) |
vol.115 |
Number (no) |
no.246 |
Page |
pp.13-18 |
#Pages |
6 |
Date of Issue |
2015-10-02 (US) |
|