Joint parameter estimation and Cramer-Rao bound analysis in ground-based forward scatter radar

Abstract

Forward scatter radar (FSR) has potential applications such as target detection, classification, and recognition. The success of these issues depends on the accuracy of parameter estimation. Many parameter estimation methods for air-based FSR have been given, but cannot directly be applied in the ground-based ones for the different system functions. The received signal in ground-based FSR depends on the target's electrical size and trajectory, which are unknown a priori. It is impossible to construct an optimal reception with accurate reference function in practical situations. An adaptive method of parameter estimation is therefore proposed in this article, which includes the construction of reference function and the two-dimensional parameter estimation. Furthermore, the Crammer-Rao bounds of estimation accuracy are obtained via the analytical derivation, which can be in turn utilized to determine the estimation step in the algorithm. Finally, the effectiveness of the algorithm is shown using both simulated and experimental data.

Passive FSR development for cars detection crossing a railroad

“…In addition, for obtain the Doppler phase signature, the principle based on a self-mixing heterodyne receiver can be used [8]. We can extract the core of the mixer is a double side square law envelope detector, then is a low-pass filter the bandwidth of which is defined by the range of Doppler frequencies in the signature [5]. Therefore, it could be defined by equation above at the mixer output will be:…”

Parameter Estimation for Uniformly Accelerating Moving Target in the Forward Scatter Radar Network

“…There is an urgent need to find a new target location method and expand the application scenarios. In bistatic radar, when the bistatic angle reaches 180 degrees, the radar cross section (RCS) of the target increases sharply [12][13][14][15][16][17][18][19]. This characteristic can be utilized in FSR.…”

Improved Reconstruction of Radio Holographic Signal for Forward Scatter Radar Imaging

“…As one of the new radar systems, FSR has become a hot research point in the 21st century. Many published studies have applied FSR to air target detection [ 3 ], maritime surveillance [ 4 ], and ground target recognition and classification [ 5 , 6 , 7 , 8 ]. Aside from ground-based FSR, navigation satellites have also been used for bistatic remote sensing in the FS region, such as remote sensing imaging [ 9 ] and moving target detection [ 10 ].…”