Indoor Geolocation Using FCDMA Pseudolites: Signal Structure and Performance Analysis

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), except for brief excerpts in connection with reviews or scholarly analysis. Use in connection with any form of information storage and retrieval, electronic adaptation, computer software or by similar or dissimilar methodology now known or hereafter developed is forbidden. The use of the publication of trade names, trademarks, service marks, or similar terms, even if they are not identified as such, is not to be taken as an expression of opinion as to whether or not they are subject to proprietary rights.This journal paper examines common optimization algorithms, such as sum, product, and mean square sense applied to the optimization of the autocorrelation functions (ACF) of GPS L1C and M-code like signals such as the variable binary offset carrier (VBOC). Before the different versions are examined for efficiency, on GPS L1C and M-code like signals such as VBOC1 which vary with the parameter of signal design and optimization alpha, they are checked to make sure that their corresponding ACFs are valid via a set of conditions known as continuity theorems. Afterwards, by employing any of the optimization algorithms such as sum, product, and mean square sense on GPS L1C and M-code like signals such as VBOC1 we are able to produce ACFs that are one hundred percent more efficient than the corresponding ACFs of the GPS L1C and M-code signals.

“…The argument can be made that the choices on on GPS L1 data signal and or the GPS military M-code (Progri 2015) [5], (Progri 2012) [6], (Progri et. al.…”

Section: Numerical Theoretical Resultsmentioning

confidence: 99%

“…Journal of Geolocation, Geo-information, and Geo-intelligence 33 fails the ACF continuity theorems it will most certainly fail the optimization theorems or the end user generalized objective functions (Progri et al 2006) [10], (Michalson and Progri 2006), (Progri et al 2009) [12], (Progri 2003) [13], and (Progri et al 2007) [7].…”

Section: Introductionmentioning

confidence: 99%

VBOC1(a) ACF Pure Signal Optimization

Progri¹

2015

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“…Equations (53) and (54) Again, from (13) and (14), for = {2,4}, we have From (27) and (28), for = 4, we have Again from (27) and (28) )}.…”

Section: 1mentioning

confidence: 99%

“…What are the unique and original challenges of 2( , 1 − ) pure signal design [3] and optimization that I believe so far have never been described in any other publication [7]- [27]? If we take a look at 2 (4 , , ) ( ) in Appendix B of Chap.…”

Section: Introductionmentioning

confidence: 99%

VBOC2(a,1-a) ACF Pure Signal Optimization

Progri¹

2015

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“…These kinds of diversities would be for example code; frequency; antenna; and space. The first three kinds of diversities are currently well known and well understood in the community and implemented in the signal structure i and depicted in the GNSS signal design ii [15]- [25].…”

Section: Introductionmentioning

confidence: 99%

GPS L5 Signal Acquisition and Tracking under Unintentional Interference or Jamming

Progri¹

2017

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Moreover, if the acquisition of the P(Y) code is lost, due to reasons that are explained in the paper, then the reacquisition of the P(Y) code will again depend on the acquisition and tracking of the C/A code. Therefore, for most commercially available receivers, the reliable acquisition and tracking of the C/A code is critical for the entire operation of a GPS receiver.However, it is well-known the vulnerability of the GPS C/A code signal acquisition to unintentional interference or jamming. The main theme of this paper is the reexamination of the GPS C/A code signal acquisition and tracking under the situation of the unintentional interference or jamming. A variety of jamming signals are considered such as: periodic, deterministic; aperiodic, deterministic; and noisy type signals or non-deterministic.However, the majority of vendors are still producing correlator type receivers. As shown by the simulation results of this paper and other previous publications a sliding correlator type of receiver used to acquire and track the C/A code or L 5 code can be easily jammed by a similar C/A code replica or L 5 code replica at power levels 10 dB or higher above noise power. GAMES, GILS, and GIANT are not the most economically viable solutions in the market to handle GPS protection of the civilian receivers. A maximum likelihood GPS receiver, which considers all the signals in the environment, can be used to acquire and track successfully the C/A and the L 5 GPS signals when the jamming signal power are in the range or 10 dB or higher above the noise power. In summary, the direction of designing acquisition and tracking receivers for future C/A L 1 code or L 5 GPS signals should go towards joint signal 20 Journal of Geolocation, Geo-information, and Geo-intelligence acquisition and tracking. There are three main challenges with these types of receivers: algorithm complexity, computational power, and test with real data. All these remain to be studied and analyzes further in the future. I think it is going to be a breakthrough in the state of the art of GPS receivers when these algorithms are ultimately implemented and a lot more work is required to arrive at that point which some of it is going to be published in future publications.