منابع مشابه
Indoor Positioning Based on FM Signals and Wi-Fi Signals
With increasing user demands on Location-based Services (LBS) and Social Networking Services (SNS), indoor positioning has become more crucial. Because of the general failure of GPS indoors, non-GNSS navigation technologies are essential for such areas. Utilizing signals of opportunity is a promising alternative navigation method providing adequate geo-location. Wireless Local Area Networks (WL...
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We present a method for computing the location of a device down to a radius of several miles within a greater metropolitan area by analyzing the signal strengths observed from commercial FM radio stations. The use of ambient commercial radio signals allows for wide coverage, both indoor and outdoor reception, client-side computing for privacy, and the feasibility of employing inexpensive, low-p...
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The enhanced Polar Outflow Probe (ePOP) is scheduled to be launched as part of the Cascade Demonstrator Small-Sat and Ionospheric Polar Explorer (CASSIOPE) satellite in early 2008. A Radio Receiver Instrument (RRI) on ePOP will receive HF transmissions from various groundbased transmitters. In preparation for the ePOP mission, data from a similar transionospheric experiment performed by the Int...
متن کاملFixed - Lag Demodulation of Discrete Noisy Measurements of FM Signals *
This paper considers an application of some recent results of fixed-lag smoothing algorithms to the demodulation of discrete noisy measurements of FM signals. The problem is attacked by first modelling the communications system in terms of a finite dimensional nonlinear stochastic system and relating the resulting model to an estimation problem for which approximate solutions can be obtained. P...
متن کاملSpeech Signal Modelling by a Sum of Complex Fm Signals
In this thesis, a new model is suggested for modelling signal data from a deterministic or stochastic process. The signal data is modelled as sum of several complex Frequency Modulated Signal. Autoregressive model based on Burg algorithm is used for estimation of model coefficients. These coefficients are used to find the power spectral density. From this the FM subsignals y Carrier and Modulat...
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ژورنال
عنوان ژورنال: IEEE Transactions on Communications
سال: 1970
ISSN: 0096-2244
DOI: 10.1109/tcom.1970.1090338