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首页> 外文会议>14th international technical meeting of the Satellite Division of the Institute of Navigation (ION GPS-2001) >A Passive GPS Bistatic Radar Altimeter forAircraft Navigation
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A Passive GPS Bistatic Radar Altimeter forAircraft Navigation

机译：用于飞机导航的无源GPS双基地雷达高度计

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摘要

The principles of GPS bistatic radar have beenrnestablished over the last several years, with applicationrnto remote sensing of ocean surface winds, sea surfacernheights, and other surface properties. Most of thernaltimetry investigations carried out by the Jet PropulsionrnLaboratory (JPL) and the European Space Research andrnTechnology Centre (ESTEC) have been focused onrnscientific applications, with the objective of determiningrnsea surface heights from satellite platforms. The use ofrnGPS reflections as navigation signals for aircraftrnaltimetry was discussed by Katzberg et al. [1], whornshowed preliminary experimental evidence of thernexpected performance. Because the signal source is thernGPS satellite transmission, a completely passive aircraftrnaltimeter based upon GPS bistatic radar would bernbeneficial for covert operations and applications limitingrnweight and power.rnWe further investigated the experimental performance ofrnaircraft altimetry using GPS bistatic radar, focusing onrnflights over both water and land surfaces. Using datarncollected with a C/A code delay-mapping receiver, wernestimated the delay of the reflected signal relative to therndirect signal and converted this measurement into arngeometric receiver height estimate. Several retrievalrnmethods were compared using experimental data. Thernheight estimates were compared with concurrent datarncollected by onboard radar altimeters and a P-code GPSrnreceiver. Measurement biases were investigated andrnRMS errors quantified.
机译：GPS双基地雷达的原理已经建立了近几年，并应用于遥感海面风，海面高度和其他表面特性。喷气推进实验室（JPL）和欧洲空间研究与技术中心（ESTEC）进行的大多数海洋科学研究都集中在科学应用上，目的是确定卫星平台的海面高度。 Katzberg等人讨论了使用GPS反射作为飞机报时的导航信号。 [1]，谁显示了预期性能的初步实验证据。由于信号源是GPS卫星传输，因此基于GPS双基地雷达的完全无源飞机高度计将有利于隐蔽的操作和限制重量和功率的应用。 。使用通过C / A码延迟映射接收器收集的数据，确定反射信号相对于直接信号的延迟，并将该测量结果转换为测角接收器高度估计。使用实验数据比较了几种检索方法。将高度估计值与机载雷达高度计和P码GPS接收器收集的并发数据进行比较。研究了测量偏差并量化了RMS误差。

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