Tracking low elevation targets in the presence of multipath propagation

Abstract

k------A tracking algorithm based on a measurement model of the multipath propagation effects on the elevation angle measurements is presented. This algorithm does not depend on the specirk signal processing and the prevailing environmental conditions. The results of simulations based on several scenarios are presented. The signal processing model used to generate the elevation measurements of a low-flying target with multipath effects is also described. This model incorporates a spherical Earth and f i i t e target range in the geometry of reflection. The algorithm clearly indicates when the measurements are degraded, in which case it automutically increases the variance of the altitude estimate. CORRESPONDENCE 913 CORRESPONDENCE

Low-Grazing Angle Target Detection and System Configuration of Mimo Radar

“…Fig. 5 shows that when M = 4, the best performance is achieved, which agrees with the analytical results in Section 6 and the conclusion in [21]. Figure 6 depicts the optimal configuration of MIMO radar.…”

“…In [18], the authors investigated the problem of detecting a moving target by exploiting multipath reflections. Other areas of application in which multipath effects are of primary interest are in low-angle tracking [19][20][21].…”

Investigating of antenna selection for the adaptive centroid localization systems

“…Moreover, changing the batteries of nodes in some places is difficult, or a (Garnett et al, 2006;Wei et al, 2011). In based techniques, multipath propagation is the typical phenomenon that causes radio signals to Shalom et al, 1994;Saleh and Valenzuela, algorithms can be divided into four major categories, namely, lateration, angulation, shows the categorizations zed by this paper. The second level of this figure presents several algorithms that have been proposed so far.…”

“…The ZigBee coordinator carries too many nodes, especially in scale wireless sensor network, which results in inefficient real-time application, data packet loss, and decreased stability. Moreover, changing the batteries of nodes in some places is difficult, or a fairly large number of nodes are troublesome to change (Garnett et al, 2006;Wei et al, 2011) based techniques, multipath propagation is the typical phenomenon that causes radio signals to reach the receiving antenna by two or more paths (Bar-Shalom et al, 1994;Saleh and Valenzuela, Figure 1 Localization hardware Algorithms Review algorithms can be divided into four major categories, namely, lateration, angulation, (Smolau, 2009;Stojmenovic, 2005). Figure 2 shows the categorizations of the localization algorithms organized by this paper.…”

Target Detection in Low Grazing Angle With Ofdm Mimo Radar

“…The solutions of other variables (such as r 1 , h r ) are omitted for brevity, see [19,21] for more details. The complex reflection coefficient is calculated by [22] ρ = Γ (ν,h) DS (7) where Γ (ν,h) is vertical polarization or horizontal polarization reflection coefficient for a plane surface; D is the divergence factor due to a curved surface; S is root-mean-squared (RMS) specular scattering coefficient which represents the roughness of surface.…”