In particular, we present results of the SAR system performance analysis focusing on the instrument stability and the achieved radiometric accuracy, as well as the Noise Equivalent Sigma Zero (NESZ). In addition, we discuss the cross-S-1A/S-1B SAR Interferometry (InSAR) performance considering ...
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...
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 (depending on the swath, see Figure 4) and the 𝜎𝑁𝐸𝑆𝑍σNESZ as from [14,15]. If we assume S1 requirement...
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 ...