搜索结果: 1-15 共查到“信号检测 GPS”相关记录38条 . 查询时间(0.14 秒)
INTER-ANNUAL HEIGHT VARIATIONS OBSERVED BY GPS MEASUREMENTS IN TURKEY
Inter-annual signal Height GPS Climate change
2018/4/18
Turkey is located in Africa-Eurasia-Saudi Arabian plate converged areas with surrounding by the Black Sea and the Mediterranean Sea. Apart from its tectonic conditions, the climate is complexly varyin...
GPS L1频点授权信号质量评估
授权信号质量评估 伪码序列估计 功率分配 相关性能
2018/5/21
GNSS信号的空间信号(SIS)质量直接影响用户的定位、测试和授时(Positioning, Velocity and Timing, PVT)服务精度，但由于授权信号保密等原因，授权信号的伪码序列未知，卫星导航系统授权信号质量评估存在一定的困难性。该文主要分析GPS BIIF-5卫星L1频点的相干自适应副载波调制(CASM)信号，利用匹配滤波理论恢复出采集数据中的P(Y)码和M码两个授权信号分量...
GPS时分二进制偏移载波调制信号的高精度无偏抗多径算法
卫星导航 GPS L1C信号 TMBOC调制 抗多径算法
2016/11/7
码参考波形(CCRW)技术以其高性能和低复杂度等优点成为卫星导航接收机领域应用极为广泛的抗多径技术。GPS L1C信号的导频分量为TMBOC调制,直接采用码参考波形(CCRW)算法消除多径时的鉴别曲线收敛点存在偏差,从而影响测距准确性。为了消除跟踪偏差,论文提出了TMBOC信号的无偏抗多径技术。该技术通过时分的方式分别生成针对BOC(1,1)和BOC(6,1)分量的本地闸波,以保证鉴相函数在码相位...
A new method of sensing the vibrational motions of a exible structure by measuring the di erence in GPS (global positioning system) carrier phase at separate antennas on the structure is presented.
The Effects of the Ionosphere and C/A Frequency on GPS Signal Shape:Considerations for GNSS-2
Effects Ionosphere C/A Frequency GPS Signal Shape Considerations
2015/6/29
By greatly increasing the chipping rate of the pseudo random noise (prn) code, it may be possible to measure the ionosphere (TEC) in near real time, by exploiting the dispersive nature of the ionosphe...
High Integrity Carrier Phase Navigation for Future LAAS Using Multiple Civilian GPS Signals
High Integrity Carrier Phase Navigation LAAS Multiple Civilian GPS Signals
2015/6/29
In near future, there will be two more civilian GPS signals,at 1227.60 MHz and 1176.45 MHz, in addition to thepresent one at 1575.42 MHz. Of many possible benefits from the three civilian signal...
Optimization of Cascade Integer Resolution with Three Civil GPS Frequencies
Cascade Integer Resolution Civil GPS Frequencies
2015/6/29
In the near future, there will be two more civil GPS signals in addition to the current one at the L1 frequency (1575.42 MHz). The second civil signal will be broadcast at the L2 frequency (1227.60 MH...
Aviation Utilization of Geostationary Satellites for the Augmentation of GPS:Ranging and Data Link
Aviation Utilization Geostationary Satellites Augmentation GPS Ranging Data Link
2015/6/29
The Wide Area Augmentation System (WAAS) is a GPS-based navigation aid currently under development by the Federal Aviation Administration (FAA). WAAS will providecorrections to aviation users for the ...
Testing and Research on Interference to GPS from UWB Transmitters
Testing Research Interference GPS UWB Transmitters
2015/6/29
Ultra-Wideband (UWB) signal transmission is a potentially promising technology that is defined by a large fractional bandwidth. Most UWB systems are based on very short pulses of radio frequency energ...
Estimation of ICAO Threat Model Parameters For Operational GPS Satellites
Estimation ICAO Threat Model Parameters GPS Satellites
2015/6/26
The ICAO Second Order Step threat model defines a class of signal deformations that present a potential integrity threat to GPS-based aircraft landing systems such as the Local Area Augmentation...
Nominal Signal Deformations:Limits on GPS Range Accuracy
Nominal Signal Deformations GPS Range Accuracy
2015/6/26
Satellite-based navigation requires precise knowledge of the structure of the transmitted signals. For GPS, accurate knowledge of the shape of the ranging codes is required to ensure no biases are int...
GPS Receiver Architecture Effects on Controlled Reception Pattern Antennas for JPALS
GPS Receiver Architecture Effects Controlled Reception Pattern Antennas JPALS
2015/6/26
Stanford University is developing a controlled reception pattern antenna (CRPA) array with beam research testbed to evaluate CRPA algorithms and software tools, and their effects on GPS signals and sa...
Adaptive Array Processing for GPS Interference Rejection
Adaptive Array Processing GPS Interference Rejection
2015/6/26
One area of active interest in the GNSS community is determining the vulnerability of multi-antenna signal processing algorithms given calibration errors in antennas and analog front-end hardware. Err...
Ionospheric Scintillation Effects on GPS Receivers during Solar Minimum and Maximum
Ionospheric Scintillation Effects GPS Receivers Solar
2015/6/25
The ionosphere has practical importance in GPS (Global Positioning System) applications because it influences transionospheric radio wave propagation. Among various phenomena in the ionosphere, ionosp...
Evaluation of Deep Signal Fading Effects Due to Ionospheric Scintillation on GPS Aviation Receivers
Deep Signal Fading Effects Due Ionospheric Scintillation GPS Aviation Receivers
2015/6/25
Deep and frequent GPS signal fading due to strong ionospheric scintillation is major concern for aircraft navigation in the equatorial region during solar maximum periods. Deep signal fading can break...