SAOCOM SAR instruments work at a frequency of 1275 MHz and a maximum bandwidth of 50 MHz; the Noise Equivalent Sigma Zero (NESZ) is assessed at −34 dB for full or quad polarimetric (QP) mode and −28 dB for dual/single (DP/SP) polarization. SAOCOM was conceived as a multi-...
where 𝜎0𝑠𝑎𝑡σsat0 is the backscattering coefficient of the area under investigation in the respective acquisition, and 𝑁𝐸𝑆𝑍𝑠𝑎𝑡NESZsat is a range-dependent noise parameter that can be calculated using look-up tables provided in the Sentinel-1 metadata. The parameters ...
where 𝜎0𝑠𝑎𝑡σsat0 is the backscattering coefficient of the area under investigation in the respective acquisition, and 𝑁𝐸𝑆𝑍𝑠𝑎𝑡NESZsat is a range-dependent noise parameter that can be calculated using look-up tables provided in the Sentinel-1 metadata. The parameters ...
where 𝜎0𝑠𝑎𝑡σsat0 is the backscattering coefficient of the area under investigation in the respective acquisition, and 𝑁𝐸𝑆𝑍𝑠𝑎𝑡NESZsat is a range-dependent noise parameter that can be calculated using look-up tables provided in the Sentinel-1 metadata. The parameters ...
Due to different noise-equivalent sigma zero (NESZ), the discontinuity of the wind retrieval at the edge of sub-swaths is the main issue and this problem is quite serious for cross-polarized SAR with weak sea-surface backscattering roughness. Recently, a few studies were conducted for TC wind...
NESZMaximum Noise Equivalent Sigma Zero QGISQuantum Geographic Information System SARSynthetic Aperture Radar SMStripmap SLCSingle Look Complex SNAPSeNtinel’s Application Platform SNAPHUStatistical-cost Network-flow Algorithm for PHase Unwrapping SNRSignal to noise Ratio ...
𝑃𝐸𝐼𝑅𝑃𝑍=𝑃𝑆⋅𝑑𝑐⋅𝜎𝑁𝐸𝑆𝑍⋅𝐵𝑅𝐹𝐼𝐵𝑆PEIRPZ=PS⋅dc⋅σNESZ⋅BRFIBS (7) The evaluation of the sensitivity from (7) is straightforward, given the S1 peak power,Ps= 5.2 kW, the duty cycle,dc= 9%, the bandwidth,Bs= 50–70 MHz ...