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首页> 外文期刊>IEEE Aerospace and Electronic Systems Magazine >Differential GPS/inertial navigation approach/landing flight test results
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Differential GPS/inertial navigation approach/landing flight test results

机译：差分GPS /惯性导航方法/着陆飞行测试结果

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In November 1990, a differential GPS/inertial flight test was conducted to acquire a system performance database and demonstrate automatic landing using an integrated differential GPS/INS with barometric and radar altimeters. Flight test results obtained from postflight data analysis are presented. These results include characteristics of DGPS/inertial error, using a laser tracker as a reference. In addition, data are provided on the magnitude of the differential correlations and vertical channel performance with and without radar altimeter augmentation. Flight test results show one sigma DGPS/inertial horizontal errors of 9 ft and one sigma DGPS inertial vertical errors of 15 ft. Without selective availability effects, the differential corrections are less than 10 ft and are dominated by receiver unique errors over the time period of an approach. Therefore, the one sigma performance of the autonomous GPS (8-ft horizontal and 20-ft vertical) is very similar to the DGPS/inertial performance. Postprocessed results also demonstrate significant improvements in vertical channel performance when GPS/inertial is aided with radar altimeter along with a low-resolution terrain map.
机译：1990年11月，进行了差分GPS /惯性飞行测试，以获取系统性能数据库并使用带有气压和雷达高度计的集成差分GPS / INS演示自动降落。介绍了从飞行后数据分析获得的飞行测试结果。这些结果包括以激光跟踪仪为参考的DGPS /惯性误差的特征。另外，在有和没有雷达高度计增强的情况下，还提供了有关差分相关幅度和垂直通道性能的数据。飞行测试结果显示，一个9英尺的西格玛DGPS /惯性水平误差和15英尺的一个西格玛DGPS惯性垂直误差。在没有选择性可用性影响的情况下，差分改正小于10英尺，并且受接收器独特误差的影响最大。一种方法。因此，自主GPS的单西格玛性能（水平8英尺，垂直20英尺）与DGPS /惯性性能非常相似。后处理结果还表明，当GPS /惯性与雷达高度计以及低分辨率地形图一起使用时，垂直通道性能将得到显着改善。

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