通过使用移动虚拟插位数组,对混合圆形和非圆形源进行增强的直接位置确定
Zhaobo Wang1, Jun Zhang1, Hui Guo1
1Nanjing Electronic Equipment Institute, Nanjing 210000, China.
Sensors (Basel, Switzerland)
|October 26, 2024
概括
本研究介绍了用于移动单个站的增强直接位置确定 (DPD) 算法. 新方法通过更好地利用稀疏数组数据和处理混合信号来提高本地化准确性,优于现有方法.
科学领域:
- 信号处理 信号处理
- 阵列信号处理 阵列信号处理
- 阵列几何学的数组.
背景情况:
- 现有的移动单站直接定位 (DPD) 算法在稀疏阵列光圈利用和混合信号类型方面存在困难.
- 挑战包括不完整的数据和循环和非循环信号的处理不足.
研究的目的:
- 提出一个增强的无网格DPD算法,以改善多个混合循环和非循环源的本地化.
- 解决现有算法的数据利用和信号类型处理方面的局限性.
主要方法:
- 从非圆形信号组件构建一个非零非结合共变矩阵,以扩展数据维度.
- 采用无网格的方法来填补coarray空隙,提高本地化性能.
- 应用单元变换来将复杂的运算转换为实际运算,减少计算复杂性.
主要成果:
- 拟议的算法通过有效利用稀疏数组数据显著提高了本地化性能.
- 与现有方法相比,在数组自由度和本地化精度方面有明显的优势.
- 通过单元化转换技术来降低计算复杂性.
结论:
- 增强的无网格DPD算法为移动单站本地化提供了卓越的性能.
- 该方法有效地解决了与稀疏数组和混合信号类型相关的挑战.
- 该算法为直接位置确定提供了更准确,更有效的计算解决方案.
相关概念视频
Curvilinear Motion: Rectangular Components
418
Curvilinear motion characterizes the movement of a particle or object along a curved path, notably evident when envisioning a car navigating a winding road. If the car starts at point A, its position vector is established within a fixed frame of reference, where the ratio of the position vector to its magnitude signifies the unit vector pointing in the position vector's direction.
As the car advances, its position evolves over time. Quantifying the car's velocity involves computing the...
As the car advances, its position evolves over time. Quantifying the car's velocity involves computing the...
418
Curvilinear Motion: Polar Coordinates
347
In polar coordinates, the motion of a particle follows a curvilinear path. The radial coordinate symbolized as 'r,' extends outward from a fixed origin to the particle, while the angular coordinate, 'θ,' measured in radians, represents the counterclockwise angle between a fixed reference line and the radial line connecting the origin to the particle.
The particle's location is described using a unit vector along the radial direction. Deriving the particle's position...
The particle's location is described using a unit vector along the radial direction. Deriving the particle's position...
347
Non-uniform Circular Motion
7.1K
In uniform circular motion, the particle executing circular motion has a constant speed, and the circle is at a fixed radius. However, not all circular motion occurs at a constant speed. A particle can travel in a circle and speed up or slow down, showing an acceleration in the direction of motion. In that case, the motion is called non-uniform circular motion, and an additional acceleration is introduced, which is in the direction tangential to the circle.
For example, such...
For example, such...
7.1K
Reconstruction of Signal using Interpolation
177
Signal processing techniques are essential for accurately converting continuous signals to digital formats and vice versa. When a continuous signal is sampled with a period T, the resulting sampled signal exhibits replicas of the original spectrum in the frequency domain, spaced at intervals equal to the sampling frequency. To handle this sampled signal, a zero-order hold method can be applied, which creates a piecewise constant signal by retaining each sample's value until the next...
177
Relative Motion Analysis using Rotating Axes
448
Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame.
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it...
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it...
448
Relative Motion Analysis using Rotating Axes-Problem Solving
389
Consider a crane whose telescopic boom rotates with an angular velocity of 0.04 rad/s and angular acceleration of 0.02 rad/s2. Along with the rotation, the boom also extends linearly with a uniform speed of 5 m/s. The extension of the boom is measured at point D, which is measured with respect to the fixed point C on the other end of the boom. For the given instant, the distance between points C and D is 60 meters.
Here, in order to determine the magnitude of velocity and acceleration for point...
Here, in order to determine the magnitude of velocity and acceleration for point...
389


