电视广播接收机和相关设备.抗扰特性.客观图像评估方法

[中文适用范围]： 此文档描述了用于模拟和数字电视广播接收机及相关设备抗扰度测试中的客观图像评估所使用的算法。所使用的算法是基于最初包含在 CISPR 20:2002/AMD2:2004 附件 K 中的规范开发的，该附件的后续版本已被 CISPR 35:2016 取代。该附件中描述的客观图像评估方法采用与 CISPR 35 规定的主观图像评估相同相同的干扰机制，并基于相同的所需信号定义。因此，客观图像评估构成了主观方法的替代方案，并具有与主观方法直接相关的优势。 [外文原描述]： CISPR TR 29:2020, which is a technical report, describes the algorithms used for objective picture assessment in immunity tests of analogue and digital TV broadcast receivers and associated equipment. The algorithms used were developed on the basis of the specifications originally included in Annex K of CISPR 20:2002/AMD2:2004, the later edition of which has been replaced by CISPR 35:2016. The method of objective picture assessment described in that annex employs the same interference mechanism and is based on the same wanted signal definition as specified in CISPR 35 for subjective picture assessment. Objective picture assessment, therefore, constitutes an alternative to the subjective method and offers the advantage of direct correlation to the subjective method. This second edition cancels and replaces the first edition published in 2004. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - update of the references, and - editorial improvements.