RADARSAT-2产品模式及对应的幅宽
波束模式 |
产品 |
像元大小 (距离×方位)(m) |
分辨率 (距离×方位)(m) |
幅宽(km*km) |
入射角(°) |
视数 |
极化方式 |
聚束模式 Spotlight |
SLC |
1.3×0.4 |
1.6×0.8 |
18×8 |
20-54 |
1×1 |
可选单极化 (HH/HV/ VV/VH) |
SGX |
1 or 0.8×1/3 |
4.6-2.0×0.8 |
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SGF |
0.5×0.5 |
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SSG,SPG |
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超精细 Ultra-Fine |
SLC |
1.3×2.1 |
1.6×2.8 |
20×20 |
20-54 |
1×1 |
|
SGX |
1×1 or 0.8×0.8 |
4.6-2.0×2.8 |
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SGF |
1.56×1.56 |
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SSG,SPG |
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宽幅超精细* Wide Ultra-Fine |
SLC |
1.3×2.1 |
1.6×2.8 |
50×50 |
29-50 |
1×1 |
|
SGX |
1.0×1.0 |
3.3-2.0×2.8 |
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SGF |
1.56×1.56 |
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SSG,SPG |
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多视精细 Multilook Fine |
SLC |
2.7×2.9 |
3.1×4.6 |
50×50 |
30-50 |
1×1 |
|
SGX |
3.13×3.13 |
10.4-6.8×7.6 |
2×2 |
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SGF |
6.25×6.25 |
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SSG,SPG |
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宽幅多视精细* Wide Multilook Fine |
SLC |
2.7×2.9 |
3.1×4.6 |
90×50 |
29-50 |
1×1 |
|
SGX |
3.13×3.13 |
10.8-6.8×7.6 |
2×2 |
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SGF |
6.25×6.25 |
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SSG,SPG |
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超宽精细** Extra-Fine |
SLC |
2.7×2.9 |
3.1×4.6 |
125×125 |
22-49 |
1×1 |
|
SGX |
2.0×2.0 |
8.4-4.1×4.6 |
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SGF |
3.13×3.13 |
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SSG,SPG |
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精细 Fine |
SLC |
4.7×5.1 |
5.2×7.7 |
50×50 |
30-50 |
1×1 |
可选单或 双极化 (HH/HV/ VV/VH或HH+HV/ VV+VH) |
SGX |
3.13×3.13 |
10.4-6.8×7.7 |
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SGF |
6.25×6.25 |
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SSG,SPG |
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宽幅精细* Wide Fine |
SLC |
4.7×5.1 |
5.2×7.7 |
150×150 |
20-45 |
1×1 |
|
SGX |
3.13×3.13 |
14.9-7.3×7.7 |
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SGF |
6.25×6.25 |
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SSG,SPG |
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标准 Standard |
SLC |
8 or 11.8×5.1 |
9 or 13.5×7.7 |
100×100 |
20-52 |
1×1 |
|
SGX |
8.0×8.0 |
26.8-17.3×24.7 |
1×4 |
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SGF |
12.5×12.5 |
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SSG,SPG |
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宽模式 Wide |
SLC |
11.8×5.1 |
13.5×7.7 |
150×150 |
20-45 |
1×1 |
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SGX |
10.0×10.0 |
40-19.2×24.7 |
1×4 |
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SGF |
12.5×12.5 |
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SSG,SPG |
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扫描窄模式 ScanSAR Narrow |
SCN,SCF,SCS |
25×25 |
81-38×60 |
300×300 |
20-46 |
2×2 |
|
扫描宽模式 ScanSAR Wide |
SCW,SCF,SCS |
50×50 |
163-73×100 |
500×500 |
20-49 |
4×2 |
|
高入射角 Extended High |
SLC |
11.8×5.1 |
13.5×7.7 |
75×75 |
49-60 |
1×1 |
单极化 (HH) |
SGX |
8.0×8.0 |
18.2-15.9×24.7 |
1×4 |
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SGF |
12.5×12.5 |
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SSG,SPG |
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低入射角 Extended Low |
SLC |
8.0×5.1 |
9.0×7.7 |
170×170 |
10-23 |
1×1 |
|
SGX |
10.0×10.0 |
52.7-23.3×24.7 |
1×4 |
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SGF |
12.5×12.5 |
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SSG,SPG |
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精细全极化 Fine Quad-Pol |
SLC |
4.7×5.1 |
5.2×7.6 |
25×25 |
18-49 |
1×1 |
全极化 (HH+VV+HV+VH) |
SGX |
3.13×3.13 |
16.5-6.8×7.6 |
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SSG,SPG |
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宽幅精细全极化* Wide Fine Quad-Pol |
SLC |
4.7×5.1 |
5.2×7.6 |
50×25 |
18-42 |
1×1 |
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SGX |
3.13×3.13 |
17.3-7.8×7.6 |
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SSG,SPG |
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标准全极化 Standard Quad-Pol |
SLC |
8 or 11.8×5.1 |
9 or 13.5×7.6 |
25×25 |
18-49 |
1×1 |
|
SGX |
8×3.13 |
28.6-17.7×7.6 |
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SSG,SPG |
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宽幅标准全极化* Wide Standard Quad-Pol |
SLC |
8 or 11.8×5.1 |
9 or 13.5×7.6 |
50×25 |
18-42 |
1×1 |
|
SGX |
8×3.13 |
30.0-16.7×7.6 |
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SSG,SPG |
― SLC(Single Look Complex),即单视复型产品。它保留了SAR相位信息,以32bit复数形式记录图像数据。
― SGX(SAR Georeferenced Extra Fine Resolution),即SAR地理参考超精细分辨率产品。地距产品,该产品依据Nyquist采用定律采用较小的像元大小。
― SGF(SAR Georeferenced Fine Resolution),即SAR地理参考精细分辨率产品。地距产品,与SGX相仿,采用较大像元大小16bit。
― SCN(ScanSAR Narrow Beam),即窄幅ScanSAR产品。图像采用25m×25m的像元大小。
― SCW(ScanSAR Wide Beam),即宽幅ScanSAR产品。图像采用50m×50m的像元大小。
― SSG(SAR Systematically Geocoded),即SAR地理编码系统校正产品。该产品在SGF产品的基础上进行了地图投影校正。
― SPG(SAR Precision Geocoded),即SAR地理编码精校正产品。该产品与SSG产品相仿,不同之处在于采用地面控制点对几何校正模型进行修正,从而大大提高了产品的几何精度。
加*模式为新增加模式