Article Figures & Data
Figures
- FIGURE 1
Multi-layered GNSS receiver defenses
The interference impact is mitigated at the sample, correlator, and measurement levels.
- FIGURE 2
Diagram of the FB algorithm
- FIGURE 3
Signals and frequencies considered for the different tests
- FIGURE 4
Summary of the combinations of multi-layer defenses and the resulting processing configurations
- FIGURE 5
Availability and reliable availability for single constellation cases Test 1 and weights based on satellite elevation.
- FIGURE 6
Availability and reliable availability for the dual-constellation cases Test 1 with weights based on satellite elevation.
- FIGURE 7
Reliable availability for Test 1 using weights based on C / N0 Upper box: single constellation cases; lower box, dual-constellation cases.
- FIGURE 8
Average number of excluded pseudoranges on a 30 second window as function of time
Single constellation cases using elevation dependent weights; Test 1, weights based on satellite elevation.
- FIGURE 9
Average number of excluded pseudorange on a 30 second window as function of time
Multi-constellation cases using elevation-based weights; Test 1, weights based on satellite elevation.
- FIGURE 10
Average number of excluded pseudoranges in a 30 second window as function of time
Multi-constellation cases using C / N0-based weights, Test 1.
- FIGURE 11
Standard deviations of the horizontal positioning errors
Single-constellation cases, Test 1, weights based on satellite elevation.
- FIGURE 12
Standard deviations of the horizontal positioning errors
Multi-constellation cases, Test 1, weights based on satellite elevation.
- FIGURE 13
Standard deviations of the horizontal positioning errors
Test 1 considering only common reliable epochs, weights based on satellite elevation.
- FIGURE 14
Availability and reliab-constellation Galileo-Beidou solutions
Test E5B.
- FIGURE 15
Standard deviation of the horizontal positioning errors for Test E5B
Tables
Parameter Test 1 Test 2 Test E5B Sampling Frequency 10 MHz 10 MHz 25 MHz Centre Frequency 1575.42 MHz 1575.42 MHz 1207.14 MHz GPS code Period 1 ms 1 ms Galileo Code Period 4 ms 4 ms 1 ms Beidou code Period 10 ms 10 ms 1 ms - TABLE 2
Characteristics of the Jamming Signals and of the Experimental Setup used for the Tests
Parameter Jammer 1 - on L1 Jammer 2 - on L1 Jammer 1 - on E5B Sweep period 9.1 μs 6.3 μs 9.1 μs Sweep range 36.4 MHz 20.3 MHz 45.7 MHz Centre Frequency 1553.22 MHz 1575.5 MHz 1213.5 MHz Attenuation Step 1 dB 1 dB 0.25 dB Attenuation Time Interval 20 s 30 s 2 s Analog GPS SSC 1.04 · 10−7
[Hz−1]1.51 · 10−7
[Hz−1]Not applicable Analog Galileo SSC 1.59 · 10−7
[Hz−1]1.98 · 10−7
[Hz−1]1.01 · 10−7
[Hz−1]Analog Beidou SSC 1.82 · 10−7
[Hz−1]2.43 · 10−7
[Hz−1]1.01 · 10−7
[Hz−1]Saturation Epoch 300 s 300 s 350 s GNSS No Mit PLI FDCS FDPB TDCS TDPB ANF GPS 0.067 0.066 0.049 0.036 0.059 0.061 0.073 Galileo 0.071 0.071 0.107 0.031 0.021 0.027 0.107 Beidou 0.474 0.467 0.469 0.457 0.458 0.461 0.453
Jump to section
Related Articles
Cited By...
- No citing articles found.