TDOA collaborative localization algorithm based on PSO and Newton iteration in WGS-84 coordinate system

Gao, Lipeng; Sun, Heng; Liu, Mengnan; Jiang, Yilin

doi:10.1109/icsp.2016.7878090

Cited by 7 publications

(2 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Among them, high-order error terms k 2 i n 2 i are omitted [21]. Suppose the target location is u BLH = [B u , L u , H u ] T (B is the geodetic longitude, L is the geodetic latitude, and H is the altitude), the signal station is a blh i = [B i , L i , H i ] T and convert the WGS-84 geodetic coordinate system to a rectangular coordinate system [22]:…”

Section: Two-step Weighted Least Squares (2wls)mentioning

confidence: 99%

Distributed Multistatic Sky-Wave Over-The-Horizon Radar Based on the Doppler Frequency for Marine Target Positioning

Ren¹,

Gao²,

Yang³

2021

Electronics

View full text Add to dashboard Cite

Maritime safety issues have aroused great attention, and it has become a difficult problem to use the sky-wave over-the-horizon radar system to locate foreign targets or perform emergency rescue quickly and timely. In this paper, a distributed multi-point sky-wave over-the-horizon radar system is used to locate marine targets. A positioning algorithm based on the Doppler frequency is proposed, namely, the two-step weighted least squares (2WLS) method. This algorithm first converts the WGS-48 geodetic coordinates of the transceiver station to spatial rectangular coordinates; then, introduces intermediate variables to convert the nonlinear optimization problem into a linear problem. In the 2WLS method, four mobile transmitters and four mobile receivers are set up, and the Doppler frequency is calculated by transmitting and receiving signals at regular intervals; it is proven that the 2WLS algorithm has always maintained a better positioning accuracy than the WLS algorithm as the error continues to increase with a certain ionospheric height measurement error and the Doppler frequency measurement error. This paper provides an effective method for the sky-wave over-the-horizon radar to locate maritime targets.

show abstract

Section: Two-step Weighted Least Squares (2wls)mentioning

confidence: 99%

Distributed Multistatic Sky-Wave Over-The-Horizon Radar Based on the Doppler Frequency for Marine Target Positioning

Ren¹,

Gao²,

Yang³

2021

Electronics

View full text Add to dashboard Cite

show abstract

“…According to the Newton iterative method, the correction vector x is added to initial estimated position at each iteration to get the more accurate coordinate, which is also served as the initial estimated position of the next iteration. After a certain number of Newton iterations, the estimated position of the vessel would approach the real position at time k [ 23 , 24 ].…”

Section: Improved Displacement Correction Position Estimation Methmentioning

confidence: 99%

An Improved Positioning Method for Two Base Stations in AIS

Jiang

Zhang

2018

Sensors

View full text Add to dashboard Cite

Resilient position, navigation, and timing (PNT) data is indispensable information in the field of e-navigation. An automatic identification system (AIS) based ranging mode (R-Mode) is put forward to develop a terrestrial backup system in order to overcome the vulnerability of the global navigation satellite system (GNSS). In general, at least three base stations are required in the traditional R-Mode positioning method. However, the geometric distribution of existing base stations is not considered for positioning, as AIS is a communication system. In some cases, a vessel can only receive signals from two base stations. In this paper, an improved position estimation method based on displacement correction is therefore proposed to solve this problem. Compared with the prior displacement correction position estimation (DCPE) method, the proposed method can improve positioning accuracy effectively by adopting a more precise motion model for the vessel, including an accelerated motion and a turning motion model. Moreover, the motion model is employed adaptively to correct the displacement of the vessel. Finally, the proposed method is verified and the performance is analyzed and compared by simulation. This study can extend the application region of AIS R-Mode.

show abstract