*Author for correspondence Indian Journal of Science and Technology, Vol 11(17), DOI: 10.17485/ijst/2018/v11i17/119274, May 2018 ISSN (Print) : 0974-6846 ISSN (Online) : 0974-5645 High Resolution Methods for Angle of Departure (AOD) and Angle of Arrival (AOA) Estimation in Bistatic Multiple-Input-Multiple-Output (MIMO) Radar Systems F. Harabi and A. Gharsallah Research in High Frequency Electronic Circuits and Systems, Faculty of Mathematical, Physical and Natural Sciences of Tunis, El Manar University, 2092, Tunisia; ferid.harabi@gmail.com, ali.gharsallah@gmail.com Keywords: AOA, AOD, Bistatic Radar, -MUSIC Method, D-Propagator Method, MIMO Abstract Objectives: In this paper we make a comparative study between two adapted methods for the estimation of the angle of departure and the angle of arrival in a Bistatic multiple input multiple output radar system. Methods: We have adapted the high resolution methods known in the literature to the estimation of the parameters of the sources with a Bistatic radar equipped with an antennas array on the transmit station and on that of the receive one. The two methods are a Derived Multiple Signal Classification method (D-MUSIC) and the Derived Propagator method (D-Propagator). Findings: Through simulation results we have conducted a comparative study between the different adapted methods. We take advantage of each one for different pçolpscenarios in terms of accuracy and resolution.The two proposed methods showed good performances even for low signal-to-noise ratio. In addition, the parameters of the radar systems have a great influence on the performance of the estimators. For this reason, a thorough study on the precision of the high resolution methods according to these parameters was made. Application: By varying the Radar Cross Section we noticed the superiority of D-MUSIC method compared to D-Propagator method for a limited reflection surface what was not the case in the other scenarios where the propagator showed remarkable superiority. 1. Introduction Several works have dealt with high resolution methods and have shown their precision and performance in sev- eral areas of source localization 1–4 . ese methods, for example, MUSIC, Propagator, Esprit, have been adapted to several applications, such as parasitic antennas 5 , UWB sources 6 and military applica- tions. is paper presents the adaptation of Propagator and MUSIC methods for Radar Bistatic applications. e search in the field of estimating the angle of depar- ture and the angle of arrival by a Bistatic radar system with multiple inputs and multiple outputs has drawn a great interest in the last decades 7–9 . In addition, since the Doppler phenomenon is an important parameter in radar systems, several works have proposed methods for estimating the Doppler frequency simultaneously with the estimation of the angles ofpar- rival 7–10 . In 11 authors used thepMUSIC method for angles of arrival estimation on Bistatic radar system and compared it to the ESPRIT method. In 12 authors presented an AOD and AOA estimation method using a circular array structures. ey transformed