GPS receiver phase jitter during ionospheric scintillation

Scintillations are caused by ionospheric plasma-density irregularities and can lead to signal power fading, loss of lock of the carrier tracking loop in the GPS receiver. The traditional method of monitoring and mitigating scintillation is to transform commercial GPS receiver with modified hardware and embedded software. To better facilitate advance development GPS receiver under different condition, GPS software scintillation receiver is designed in this paper. The hardware scheme of high-speed GPS signal acquisition system is first discussed and implemented with FPGA and DSP architecture. Then, we describe receiver software processing algorithm, particularly the portion involving the scintillation signal acquisition and tracking, ionospheric scintillation index extracting and scintillation monitoring. The performance of software receiver is demonstrated under scintillation conditions. Relevant results show that software-receiver based approach can avoid weak signal loss and extract effectively ionospheric scintillation parameter compared with the traditional extracting method. Software receiver is suitable and reliable for the ionospheric scintillations monitoring, and can provide theoretical foundations and experimental preparations for future scintillation studies implemented with Chinese indigenous BeiDou-Ⅱ navigation and poisoning system.

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Ionospheric scintillation intensity fading characteristics and GPS receiver tracking performance at low latitudes

GPS Solutions ◽

10.1007/s10291-019-0835-1 ◽

2019 ◽

Vol 23 (2) ◽

Cited By ~ 8

Author(s):

Kai Guo ◽

Marcio Aquino ◽

Sreeja Vadakke Veettil

Keyword(s):

Tracking Performance ◽

Ionospheric Scintillation ◽

Gps Receiver ◽

Low Latitudes ◽

Intensity Fading

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Study of GPS Position Error during 16 June, 2005 (Disturb Day) at Bhopal

Circulation in Computer Science ◽

10.22632/sed-2017-ccs417 ◽

2017 ◽

Vol SED2017 (01) ◽

pp. 1-4

Author(s):

Richa Trivedi

Keyword(s):

Geomagnetic Latitude ◽

Position Error ◽

Source Mechanism ◽

Ionospheric Scintillation ◽

Positional Error ◽

Gps Receiver ◽

Error Ellipse ◽

Equatorial Station ◽

Position Errors ◽

Level Of Confidence

In order to study GPS position error, the GPS Ionospheric Scintillation and TEC Monitor (GISTM) based GPS receiver was installed at an equatorial station, Bhopal (23.2° N, 77.4° E, Geomagnetic latitude 14.23˚ N), India. We analyzed the horizontal error and the level of confidence in terms of DRMS and CEP and positional error from fixed GPS point for 16 June 2005(disturb day). In order to study the effect of storm on GPS position errors, the latitudinal error and longitudinal error in meter is studied. We observed that the maximum number of error points in the latitudinal error lies between 1.95 to -1.57 meter while longitudinal error points lies between 1.09 to – 1.28 meter. It was observed that some of the error points lie out the 95% error ellipse and it is observed that the error point’s increased in N and N-E direction. The results have been compared with the earlier ones and discussed in terms of possible source mechanism responsible for the position error at anomaly crest region.

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Development of an ionospheric scintillation monitor using single frequency GPS receiver

Wuhan University Journal of Natural Sciences ◽

10.1007/bf02830312 ◽

2002 ◽

Vol 7 (2) ◽

pp. 189-194

Author(s):

Shu Di-fei ◽

Xu Ji-sheng

Keyword(s):

Single Frequency ◽

Ionospheric Scintillation ◽

Gps Receiver

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PERBANDINGAN KARAKTERISTIK AKTIVITAS SINTILASI IONOSFER DI ATAS MANADO, PONTIANAK DAN BANDUNG DARI DATA PENERIMA GPS (CHARACTERISTICS COMPARISON OF IONOSPHERIC SCINTILLATION ACTIVITIES OVER MANADO, PONTIANAK AND BANDUNG BASED ON GPS RECEIVER DATA)

Jurnal Sains Dirgantara ◽

10.30536/j.jsd.2016.v14.a2330 ◽

2017 ◽

Vol 14 (2) ◽

pp. 1

Author(s):

Sri Ekawati ◽

Sefria Anggarani ◽

Dessi Marlia

Keyword(s):

Satellite Communication ◽

Geomagnetic Latitude ◽

Scintillation Index ◽

Ionospheric Scintillation ◽

Signal Quality ◽

Gps Receiver ◽

Band Frequency ◽

Satellite Navigation System ◽

Satellite Signal

Ionospheric scintillation activity on certain region need to be known its characteristics since its occurrence can degrade satellite signal quality of global satellite navigation system (GNSS) and also satellite communication that works at L-band frequency. The occurrence of ionospheric scintillation varies with location. Therefore, this paper aimed to determine comparative charasteristics of ionospheric scintillation activity over Manado, Pontianak and Bandung from amplitude scintillation index S4 data derived from GPS receiver. The data obtained from the GPS Ionospheric Scintillation and TEC Monitor (GISTM) at Manado station (1.48o N; 124.85oE geomagnetic latitude 7.7oS), at Pontianak station (0.03o S;109.33oE geomagnetic latitude 9.7oS) and at Bandung (-6.90oS;107.6oE geomagnetic latitude 16.54oS) on July 2014 to June 2015. The data were classified into three categores : quiet, moderate and strong based on s4 index. Then we calculated percentage occurrence of scintillation monthly from each observation stastions and mapping of S4 index over Manado, Pontianak and Bandung. The results show that the presentage of strong scintillation (S4>0.5) above Manado is always lower than the other stastions. Strong scintillation was detected at one stations may not also detected at other stations. For very strong scintillastion event, the occurrence of strong scintillation could be detected by all observation stastions but vary in duration. Duration of strong scintillation over Bandung was the longest (up to 4 hours) compared to Pontianak (less than 2 hours) and Manado (less than 1 hour). Based on map of distribution scintillastion occurrence, strong scintillation occurs more intensively over Bandung than over Pontianak and Manado.

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