纯角度目标跟踪问题一般包括二维纯方位跟踪和三维纯角度跟踪两种情形,其特性与所选用的坐标系有关。广泛采用的坐标系是直角坐标系(二维或三维)、极坐标系(二维)和球坐标系(三维)。本文分别在直角坐标系和改进的极坐标系下建立了二维系统模型,并进行了性能分析,指出了后者的优越性。在三维情况下,作了类似工作。最后还以二维问题为例,建立了机动目标跟踪的直角坐标模型和改进的极坐标模型。 Pure-angle target tracking problems generally include two-dimensional purely azimuth tracking and purely three-dimensional tracking of the two cases, the characteristics of the selected coordinate system. Widely used coordinate systems are Cartesian (2D or 3D), polar (2D) and spherical (3D). In this paper, a two-dimensional system model is established under the Cartesian coordinate system and the improved polar coordinate system respectively, and the performance analysis is carried out. The superiority of the latter is pointed out. In the three-dimensional case, similar work was done. Finally, taking the two-dimensional problem as an example, a Cartesian coordinate model and an improved polar coordinate model of maneuvering target tracking are established.