New application of reflected GPS signals L1/L2 observation techniques with an integrated GPS receiver for ground object detection and digital terrain elevation mapping

Lie Chung Shen, Ching Liang Tseng, Jyh-Chin Juang, Chia Chyang Chang

Research output: Contribution to conferencePaper

Abstract

In the paper, a new application and development of a highly integrated GPS receiver with reflected GPS signals for Ground Object Detection and Digital Terrain Elevation Mapping will be described. Several application considerations have been analyzed in order to successfully acquire and track weak, reflected GPS signals from ground surface. First of all, both RHCP and LHCP antennas are employed so that direct and reflected signals can be acquired simultaneously. The direction of arrival of the signals may be along the reflected signal path or even along the line-of-sight of a particular satellite. Appropriate signal conditioning and amplification are then used to feed signals into the receiver front end without sacrificing sensitivity. Unlike most existing GPS reflection experiment, the goal of the study is to exploit the SNR and carrier phase components of the reflected signals for ground object detection and digital terrain elevation mapping. To this end, several modifications are made in the tracking loops. An integer ambiguity resolution algorithm has also been implemented. During the development and test stage, the digital terrain elevation data and satellite's images has been used and mapped with the integrated software.

Original languageEnglish
Pages461-472
Number of pages12
Publication statusPublished - 2007 Aug 23
EventInstitute of Navigation National Technical Meeting, NTM 2007 - San Diego, CA, United States
Duration: 2007 Jan 222007 Jan 24

Other

OtherInstitute of Navigation National Technical Meeting, NTM 2007
CountryUnited States
CitySan Diego, CA
Period07-01-2207-01-24

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Shen, L. C., Tseng, C. L., Juang, J-C., & Chang, C. C. (2007). New application of reflected GPS signals L1/L2 observation techniques with an integrated GPS receiver for ground object detection and digital terrain elevation mapping. 461-472. Paper presented at Institute of Navigation National Technical Meeting, NTM 2007, San Diego, CA, United States.