Titre :

Phase Coded Costas Signals for Ambiguity Function Improvement and Grating lobes Suppression

Auteur(s) :

Touati, Nadjah [Auteur]
Laboratoire Électronique Ondes et Signaux pour les Transports [IFSTTAR/COSYS/LEOST]
Tatkeu, Charles [Auteur]
Laboratoire Électronique Ondes et Signaux pour les Transports [IFSTTAR/COSYS/LEOST]
Chonavel, Thierry [Auteur]
Département Signal et Communications [SC]
Lab-STICC_TB_CID_TOMS
Rivenq, Atika [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]

Titre de la manifestation scientifique :

VTC 2013 Fall : IEEE Vehicular Technology Conference (VTC Fall)

Ville :

Las Vegas

Pays :

France

Date de début de la manifestation scientifique :

2013-09-02

Éditeur :

INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS - IEEE

Date de publication :

2013-01-01

Discipline(s) HAL :

Sciences de l'ingénieur [physics]/Traitement du signal et de l'image [eess.SP]
Informatique [cs]/Traitement du signal et de l'image [eess.SP]

Résumé en anglais : [en]

In this paper, a novel radar signal is proposed. It is based on a modification of Costas signals obtained by increasing the frequency separation of Costas frequency hops beyond the orthogonality condition. Indeed, Costas ...
Lire la suite >In this paper, a novel radar signal is proposed. It is based on a modification of Costas signals obtained by increasing the frequency separation of Costas frequency hops beyond the orthogonality condition. Indeed, Costas codes are well known for their good Range-Doppler properties. Their orthogonality condition states that frequency separation between frequency hops of the Costas code should be at most equal to the inverse of bit duration of the code. Increasing frequency separation beyond this condition is sometimes needed in radar applications. However, this leads to the appearance of grating lobes near the main temporal lobe of the autocorrelation function. The originality of the proposed approach, in this paper, consists in proposing a modification of Costas sub-pulses in order to overcome grating lobes problem. Indeed, we show that when introducing Phase coding in the sub-pulses, grating lobes are lowered significantly. The study is carried out for several phase codes. The proposed code design is validated through computer experiments.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Non spécifiée

Vulgarisation :

Non

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL