A Summary of the Results Achieved by the GPS Disciplined References of the NetRAD and NeXtRAD Multistatic Radars

Sandenbergh, J.S.; Inggs, Michael

doi:10.1109/radar.2019.8835507

Cited by 7 publications

(9 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An alternative cost-effective approach has been proposed for coherent MRS based upon the use of GPS Disciplined Oscillators [26,[31][32][33] to suppress residual phase noise and maintain phase coherence. Time and phase synchronisation is achieved by phase locking the reference oscillators of the radar nodes using the rising edge of the GPS 1 pulse per second pulse from GPS satellites.…”

Section: Phase Noise Implicationsmentioning

confidence: 99%

See 1 more Smart Citation

On the design of an optimal coherent multistatic radar network configuration

Berry

Dahal

Venkataraman

2022

IET Radar Sonar & Navi

View full text Add to dashboard Cite

The purpose of operating a radar system multistatically is to acquire information about targets of interest more quickly and reliably than would be possible using disparate radars, which fuse data and track post‐detection. This paper identifies and addresses the critical issues for designing a coherent multistatic radar system using conventional coherent radars and proposes a set of design principles for configuring a coherent multistatic radar network with the aim of maximising the utility of information while constraining system cost and complexity. The issues discussed are as follows: the localisation of targets in three dimensions; eliminating the inevitable spatial ambiguities arising from sparse spatial sampling while exploiting the large aperture for high resolution; the achievement of spatial coherent processing gain for target detection; the effect of phase centre localisation, phase and frequency errors on synchronisation; the incorporation of three‐dimensional Doppler estimation for slow‐time coherent integration. The arguments presented are physically‐based and complemented by mathematical analysis and numerical experimentation using non‐linear sparse estimation, the sparse algorithm being critically important for resolving spatial ambiguities. An optimal configuration is identified, which has sufficiently many nodes to overcome spatial ambiguities and achieves significant spatial coherent processing gain, while simultaneously constraining the overheads of inter‐node synchronisation and communication.

show abstract

Section: Phase Noise Implicationsmentioning

confidence: 99%

“…The use of Global Positional System (GPS) Disciplined Oscillators for maintaining synchrony between physically-separate radars has been considered in Ref. [31][32][33].…”

Section: Introductionmentioning

confidence: 99%

On the design of an optimal coherent multistatic radar network configuration

Berry

Dahal

Venkataraman

2022

IET Radar Sonar & Navi

View full text Add to dashboard Cite

show abstract

“…The works published by Sandenbergh et al provide key references for the design of a one-way GPSDO based system for synchronisation of pulse-Doppler multistatic radar [16][17][18][19][20]. A derivation of the requirements for synchronisation of the experimental NetRAD and NeXtRAD MSRS is presented in Ref.…”

Section: Introductionmentioning

confidence: 99%

“…A derivation of the requirements for synchronisation of the experimental NetRAD and NeXtRAD MSRS is presented in Ref. [16]. A further piece of work by Sandenbergh et al presents the development of an adaptive two-way TFT system for distributed time, frequency and phase synchronisation of radar networks [21].…”

Section: Introductionmentioning

confidence: 99%

Global Navigation Satellite Systems disciplined oscillator synchronisation of multistatic radar

Beasley,

Peters,

Horne

et al. 2023

IET Radar Sonar & Navi

View full text Add to dashboard Cite

A fundamental challenge in the practical implementation of multistatic radar systems (MSRS) is the requirement for precise time and frequency synchronisation between the spatially separated radar nodes. The authors evaluate the performance of different classes of commercially available Global Navigation Satellite Systems (GNSS) timing receivers, Local Oscillators (LO) and GNSS Disciplined Oscillators (GNSSDOs) to determine the limitations of using one‐way GNSS Time and Frequency Transfer (TFT) in this application. From evaluating the performance of three pairs of GNSSDOs, it is concluded that one‐way GNSS TFT will likely be suitable only for the synchronisation of fully spatially coherent MSRS with carrier frequencies up to 100 MHz and waveform bandwidths up to 20 MHz. Whereas, in the case of short‐term spatially coherent MSRS, synchronisation of systems with carrier frequencies up to a few GHz and waveform bandwidths of over 100 MHz will likely be possible. The performance of the different classes of GNSSDOs during GNSS denial (holdover) are evaluated, where it is concluded that frequency offsets between LOs at the point of GNSS denial will often significantly contribute, or even dominate, the holdover performance. Analysis of two practical multistatic radar measurements verifies the function of using the GNSSDOs for wireless synchronisation of the ARESTOR MSRS.

show abstract

“…Very few joint active and passive sensing systems exist in the open literature. A range of multistatic radar systems that use a co-operative radar waveforms have been developed, for example the NetRAD & NeXtRAD radars [10], but systems that combine an active radar and a passive radar that leverages communications IoO are very rare. Some analysis has been performed on simulated concepts based on the principle that a distributed active and passive network of sensors are deployed [11].…”

Section: Introductionmentioning

confidence: 99%

Joint Active Passive Sensing using a Radio Frequency System-on-a-Chip based sensor

Ritchie

Peters

Horne

2022

2022 23rd International Radar Symposium (IRS)

View full text Add to dashboard Cite

In this paper we present a dual active and passive radar experimental setup that uses the UCL ARESTOR platform. This is a multi-role RF sensor based on a Xilinx Radio Frequency System on a Chip (RFSoC) device. The system is capable of operating as an active radar, passive radar and wideband electronic surveillance receiver. Experimental results are shown that leverage 2.4 GHz passive radar experiments along with a 5.8 GHz active radar mode that are operating simultaneously observing a target of interest. Details of a bespoke designed RF front-end to access higher frequency bands are included within the paper as well as information on processing pipelines developed within the Field Programmable Gate Array (FPGA). Comparison of the target signature and how both modes could be best utilised are analysed and discussed. The target of interest within this paper is a person walking while being sensing by both modes simultaneously.

show abstract

A Summary of the Results Achieved by the GPS Disciplined References of the NetRAD and NeXtRAD Multistatic Radars

Cited by 7 publications

References 8 publications

On the design of an optimal coherent multistatic radar network configuration

On the design of an optimal coherent multistatic radar network configuration

Global Navigation Satellite Systems disciplined oscillator synchronisation of multistatic radar

Joint Active Passive Sensing using a Radio Frequency System-on-a-Chip based sensor

Contact Info

Product

Resources

About