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LWA - Basic Specifications
[as of January 2006]
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| Specification |
Required |
Desirable |
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| Frequency Range |
20 MHz to 80 MHz |
10 MHz to 88 MHz |
| Angular Resolution |
θ ≤ [8, 2]″ |
θ ≤ [7, 1.4]″ |
| Largest Angular Scale at [20, 80] MHz |
LAS ≥ [8, 2]° |
LAS ≥ [16, 4]° |
| Baseline Range |
100 m to 400 km |
50 m to 600 km |
| Sensitivity at [20, 80] MHz |
σ ≤ [1.0, 0.5] |
σ ≤ [0.5, 0.1] |
| Collecting Area (m2) |
Ae = 1 x 106 |
Ae = 4 x 106
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| Dynamic Range [20, 80] MHz |
DR ≥ [1x103, 2x103] |
DR ≥ [2x103, 8x103] |
| Δ νmax (per beam) |
Δ ν ≥ 4 MHz |
Δ ν ≥ 8 MHz |
| Δ νmin |
Δ ν ≤ 100 Hz |
Δ ν ≤ 10 Hz |
| Temporal Resolution |
Δ τ = 10 msec |
Δ τ ≤ 0.1 msec |
| Polarization |
1 circular |
full |
| Sky Coverage |
z ≥ 40° |
z ≥ 15° |
| Field of View at [20, 80] MHz |
= [8, 2]° |
≥ [16, 4]° |
| # of Beams |
= 4 single pol. |
≥ 4 single pol. |
| Configuration |
2D array, N = 53 stations |
2D array, N ≥ 53 |
| Philosophy |
User-oriented, open facility, proposals solicited from entire
community |
| Mechanical Lifetime |
≥ 15 years for potentially long lifetime |
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