Research on airborne infrared location technology based on orthogonal multi-station angle measurement method

Zheng, Qiang; Chen, Jiaqi; Ri-jie, Yang; Shan, Zhichao

doi:10.1016/j.infrared.2017.08.019

Cited by 7 publications

(4 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3, and at the same time matches the total standard deviation of the measured positions ∆r std to that of the corresponding measured signal directions ∆θ std according to the curve fitted in (23) and (24). Finally, the ultimate corrected average values of the measured signal directions θ 1av and θ 1av are utilized to extract the position of the target vehicle according to (21) and (22). Now the purpose of our simple data-processing procedure described in Section III-A is clear: we want to regulate the distribution of measured positions of the target vehicle in each data set such that they form a straight line wherever possible.…”

Section: B Nonlinear Relation Between the Distribution Of Measured Si...mentioning

confidence: 99%

“…Under good geometric circumstances in low-noise indoor environments, such as those in [21], positioning by triangulation with optical signal can be very effective and accurate within a few meters. In a 10-km long-range airborne triangulation positioning system, a combination of two orthogonal pairs of signal-direction sensors has been considered to improve the poor geometrical condition [22]. Notice that for airborne measurements the multipath scattering is not a serious problem.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Study of Error Reduction in Optical Triangulation for Short-Range Intervehicle Positioning

et al. 2022

View full text Add to dashboard Cite

The long-existing problem of high positioning inaccuracy by triangulation in the far region in short-range vehicleto-vehicle (V-to-V) communication environments is investigated in this study. The triangulation is achieved by sensing angle of arrival with two optical signal-direction sensors developed in our previous works. The measured signal-direction error can be categorized into two different kinds, namely systematic error and random error. The former is mainly incurred by imperfect calibration of hardware and misalignment of signal-direction sensors as well as multipath scattering of the signal. The latter is caused by random noises. Both of them lead to positioning error. By utilizing the specific characteristics pertaining to the triangulation measurements, it is possible to extract the target location and increase the accuracy with an optimization algorithm. With the aid of a general-purpose optimization subroutine together with two proper objective functions developed in this study, this work shows the viability of this idea. With the technique proposed in this paper, precise hardware calibration and careful alignment of signal-direction sensors are unnecessary. The problem of multipath scattering can also be mitigated. This work indicates a possible direction to treat the problem of high inaccuracy in noisy and ill-geometric environments in triangulation measurement. The abovementioned signal-direction sensors are currently constructed for infrared light. By changing the signal sources and detectors, they can also be fabricated for visible light. Such an alteration of transmission medium is beneficial for the currently emerging short-range visible-light intervehicular communications.

show abstract

Section: B Nonlinear Relation Between the Distribution Of Measured Si...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Study of Error Reduction in Optical Triangulation for Short-Range Intervehicle Positioning

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Active sensors can achieve single-station positioning by transmitting signals to measure the distance to the target [4]. Passive sensors do not emit electromagnetic signals; therefore, they have a strong concealment [5]. Generally speaking, the types of passive sensors' measurements include time delay (TD), Doppler shift (DS), angle of arrival (AOA), angle rate, or their combinations [6,7].…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Signal Source Localization with Angle-Only Measurements in Passive Sensor Networks

Wang,

Zhou,

Gong

et al. 2024

Remote Sensing

View full text Add to dashboard Cite

Some passive sensors can provide only relative angles of a signal source. To obtain the signal source location, multiple passive sensors can be constructed into a passive sensor network through communication links. This paper investigates the source localization problem with angle-only measurements in three-dimensional space. First, we present an intersection localization method, which estimates the target position by minimizing the sum of distances between lines formed by angle-only measurements. It has the same target position estimate as the widely used least-squares (LS) method, but with a lower computational cost. Furthermore, considering the differences in measurement accuracy of sensors, the weighted least-squares (WLS) algorithm can achieve better localization performance than the LS method. Unfortunately, since the coefficient matrix and the noise vector are correlated, the WLS method is biased. The bias-compensation WLS (BCWLS) method is also presented in this paper to reduce the bias by estimating the correlation between the coefficient matrix and the pseudolinear noise vector. To evaluate the performance of the presented algorithms, numerical simulations are conducted, indicating that the superiority of the intersection localization method in computational cost and the superiority of the BCWLS method in localization accuracy.

show abstract

“…Infrared imaging is widely used in the field of target detection because of its advantage of all-day operation. The traditional target localization methods based on infrared imaging usually use infrared laser information fusion 1,2 and infrared multistation positioning 3 techniques. For infrared monostation passive target location, Li et al 4 established the relative motion between the moving target and the moving platform and simulated a target location experiment at the distance of 8.2 to 27 km.…”

Section: Introductionmentioning

confidence: 99%

Research on monostation passive location technology based on infrared tracking system

Wen

Wang

2022

Opt. Eng.

View full text Add to dashboard Cite

. The ability to track and locate aerial targets is of great significance to target monitoring and recognition, as well as other applications. The traditional infrared tracking system needs the assistance of active ranging methods, such as laser and radar, or binocular vision and multistation detection methods for positioning. Based on high-resolution infrared tracking systems, which measure the target temperature and angle, and the law that target temperature changes with height, a monostation passive target location method based on infrared quantitative detection is proposed. The theoretical model of target location, which comprehensively considers the factors of temperature retrieval, aerodynamic heating, and atmosphere, is established. The location experiment is conducted with the developed high-resolution infrared tracking system. Compared with the automatic dependent surveillance-broadcast data of the actual target, the relative error of the ranging is <5 % . The error sources of this method are simulated and analyzed, and the simulation of the location distance and the error analysis of the long-distance target are conducted. Results show that the proposed method effectively locates the target. The method improves the monostation location ability of the infrared system and has a certain application value.

show abstract

Research on airborne infrared location technology based on orthogonal multi-station angle measurement method

Cited by 7 publications

References 1 publication

A Study of Error Reduction in Optical Triangulation for Short-Range Intervehicle Positioning

A Study of Error Reduction in Optical Triangulation for Short-Range Intervehicle Positioning

Three-Dimensional Signal Source Localization with Angle-Only Measurements in Passive Sensor Networks

Research on monostation passive location technology based on infrared tracking system

Contact Info

Product

Resources

About