Tracking GPS above GPS satellite altitude: first results of the GPS experiment on the HEO mission Equator-S

Balbach, O.; Eissfeller, Bernd; Hein, Günter W.; Enderle, Werner; Schmidhuber, Michael; Lemke, Nathan D.

doi:10.1109/plans.1998.670065

Cited by 33 publications

(21 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Promising experimental results presented in Powell et al (1999) and Balbach et al (1998) have demonstrated that by modifying the traditional signal processing techniques, GNSS can also be used in higher orbits such as medium Earth orbit (MEO) and high Earth orbit (HEO). More recent research studies have shown the interest of the scientific space community to investigate the potential use of GNSS as navigation system for lunar missions (Manzano-Jurado et al, 2014;Silva et al, 2013;Capuano et al, 2014aCapuano et al, , 2014bPalmerini et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…However, some of these first studies (see e.g., Manzano-Jurado et al, 2014;Capuano et al, 2014a;Silva et al, 2013) have revealed that although weak, GNSS signals from the side lobes of the GNSS transmitters antennas or from the spillover of the main lobe can still be acquired and tracked successfully. Experimental demonstrations have been presented in Balbach et al (1998) for HEO, while theoretical studies have been described in Capuano et al (2014a) for higher orbits up to moon altitude.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

GPS-based orbital filter to reach the moon

et al. 2015

View full text Add to dashboard Cite

Nowadays, global navigation satellite systems (GNSSs) are used for many new applications that go further than the original goal of providing position, velocity and timing for land, maritime and air applications. In particular, GNSS receivers have been adopted as main navigation system for several low Earth orbits (LEOs) missions, increasing the autonomy of the hosting spacecraft, reducing the networking operation costs. Accordingly, they result in an attractive solution even for higher Earth orbits. However, although many studies have shown that GNSS observations can also be obtained at altitudes above the GNSS constellations by using high sensitivity receivers, the use of these signals is still challenging because of their very weak power and the poor relative geometry between the receiver and the transmitters. In this paper, we describe the implementation of an orbital filter specifically designed for moon missions, which aims to improve the navigation performance achievable when using GNSS observations.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

GPS-based orbital filter to reach the moon

et al. 2015

View full text Add to dashboard Cite

show abstract

“…The SSV is not a requirement for GPS Block IIR/ IIR-M SVs, but some service is available (section on The GPS IIR/IIR-M Antenna Panel Performance). Recent SSV use of the GPS signal is reflected in references relating to geosynchronous use such as [11][12][13][14][15][16][17][18][19][20][21][22][23], references relating to high Earth orbit use such as [24][25][26][27], and references relating to use for Lunar missions, such as [28][29][30].…”

Section: Gps Space Service Requirementsmentioning

confidence: 99%

The GPS Block IIR and IIR-M Broadcast L-band Antenna Panel: Its Pattern and Performance

Marquis

Reigh

2015

J Inst Navig

View full text Add to dashboard Cite

The Global Positioning System (GPS) Block II Replenishment (IIR) space vehicle (SV) has made up at least one-half of the GPS constellation since 2006. This consists of the 12 original 'classic' IIR SVs and the eight 'modernized' IIR-M SVs. As a stepping-stone toward the IIR-M modernization, Lockheed Martin developed and deployed an updated version of the satellite antenna panel for the L-band broadcast signal. This is the signal used by the worldwide GPS user population. This paper describes both antenna panel versions, their broadcast signal patterns, the performance observed in factory testing, and their on-orbit performance. This is the initial publication of these antenna panel patterns. Ground and on-orbit measurements of both versions of the antenna show that all specification requirements are exceeded. They also reflect the increased antenna gain for the new IIR antenna. The L1 signal shows an increase of 1 dB in received power at edge of Earth, and L2 shows an increase of 2 dB in received power. All users, both terrestrial and on-orbit, benefit from this enhanced power profile.

show abstract

“…As shown in Figure 1, the above solution is based on the fact that the GPS antenna contains a main lobe beam towards the earth and a side lobe beam towards the space around the earth. However, a challenge is brought about as the signals emitted from the side lobe may be too weak to be effectively utilized by the HEO satellites [2]. In order to address the above challenges, Moreau and Christian have analyzed the visibility of GNSS satellites observed from GEO [3,4].…”

Section: Introductionmentioning

confidence: 99%

BeiDou Satellites Assistant Determination by Receiving Other GNSS Downlink Signals

Chen¹,

Zhang²,

Huang³

et al. 2016

International Journal of Antennas and Propagation

View full text Add to dashboard Cite

GNSS’s orbit determinations always rely on ground station or intersatellite links (ISL). In the emergency of satellite-to-ground links and ISL break-off, BeiDou navigation satellite system (BDS) satellites cannot determine their orbits. In this paper, we propose to add a spaceborne annular beam antenna for receiving the global positioning system (GPS) and global navigation satellite system (GLONASS) signals; therefore, the BDS satellites may be capable of determining their orbits by GPS/GLONASS signals. Firstly, the spectrum selection, the power isolation, the range of Doppler frequency shift, and changing rate are taken into account for the feasibility. Specifically, the L2 band signals are chosen for receiving and processing in order to prevent the overlapping of the receiving and transmitting signals. Secondly, the minimum number of visible satellites (MNVS), carrier-to-noise ratio (C/N0), dilution of precision (GDOP), and geometric distance root-mean-square (gdrms) are evaluated for acquiring the effective receiving antennas’ coverage ranges. Finally, the scheme of deploying 3 receiving antennas is proved to be optimal by analysis and simulations over the middle earth orbit (MEO), geostationary earth orbit (GEO), and the inclined geosynchronous satellite orbit (IGSO). The antennas’ structures and patterns are designed to draw a conclusion that installing GPS and GLONASS receivers on BDS satellites for emergent orbits determination is cost-effective.

show abstract

Tracking GPS above GPS satellite altitude: first results of the GPS experiment on the HEO mission Equator-S

Cited by 33 publications

References 0 publications

GPS-based orbital filter to reach the moon

GPS-based orbital filter to reach the moon

The GPS Block IIR and IIR-M Broadcast L-band Antenna Panel: Its Pattern and Performance

BeiDou Satellites Assistant Determination by Receiving Other GNSS Downlink Signals

Contact Info

Product

Resources

About