# Development of the User Requirements for the Canadian WildFireSat Satellite Mission
## 2 Wildfire Management Needs Assessment
### Fire Management Functionalities:
\begin{table}
\begin{tabular}{c c c c} \hline \hline
**FMRs** & **URD Parent References** & **Rationale** \\ \hline Daily (or better) coverage of the Canadian landmass, with consistent timing and peak burn observation (FMF-1,2) & Temporal resolution (CWFM-URD-0020) & To ensure a minimum of daily coverage is provided \\  & & Peak burn observation (CWFM-URD-003040) & To ensure that the daytime overpass falls in the peak burn period \\ \hline \multirow{6}{*}{Detection and mapping of wildfires and smoke plumes (FMF-3)} & Spatial resolution (CWFM-URD-0150-251) & Constraints are applied to the spatial resolution to ensure adequate ability to resolve active-fire area and to detect change in its position \\  & & Swath (CWFM-URD-0110/120) & Minimum swath width to increase the probability of containing the full \\  & & Spectral bands, dynamic ranges, and sensitivities & Minimum spectral bands and performance requirements to conduct cloud \\  & & (CWFM-URD-0150-251) & making, widdier detection and characterization, and burned area mapping \\  & & Band co-registration (CWFM-URD-0260-280) & Wildfire detection, characterization, and mapping requires multispectral \\  & & Band co-registration (CWFM-URD-0260-280) & Thammers. Band co-registration requirements are defined to ensure cross-band analysis is possible across the swath \\  & & Geo-coding (CWFM-URD-0300) & Geographical positioning requirements to enable change detection, \\  & & comparison to landscape features, and response operations \\ \hline \multirow{6}{*}{Measurement of wildfire behaviour (FMF-4)} & Spatial resolution (CWFM-URD-0089-90) & Spatial resolution is constrained for optimal ROS measurement [V], \\  & & and FRP accuracy [71] & \\  & Swath (CWFM-URD-0110/120) & Minimum swath width to increase the probability of containing the full \\  & & wildfire within a single observation \\  & & Minimum spectral bands and performance requirements to conduct wildlife \\  & & (CWFM-URD-0150-251) & Minimum spectral bands and performance requirements to conduct wildlife \\  & & (CWFM-URD-0260-280) & detection, sub-pixel characterization, and collect FRP measurements \\  & & Sub-pixel wildfire characterization requires multispectral measurements. \\  & & Band co-registration (CWFM-URD-0260-280) & Band co-registration requirements are defined to ensure cross-band analysis is \\ \hline \multirow{6}{*}{Compatibility with other EO systems (FMF-5)} & Spatial resolution (CWFM-URD-0089-90) & The spatial resolution range required to meet FMF-3 and FMF-4 is broad, the specific requirements are chosen to closely match VIIRIS-band spatial resolution \\  & & & resolution \\  & & & resolution \\ \cline{1-1}  & & & \\ \cline{1-1}  & Peak burn observation (CWFM-URD-003040) & A peak burn overpass is required to ensure sufficient temporal offset from the \\ \cline{1-1}  & & VIFRIS overpass time (\(\sim\) 130 local) for optimal R& \\ \cline{1-1}  & & the specified spatial resolution & \\ \hline \multirow{6}{*}{Near-real-time data (FMF-6)} & Data latency (CWFM-URD-0050) & A data latency of no more than 30 min from overpass to end user \\ \cline{1-1}  & & delivery is required \\ \cline{1-1}  & & Downlink priority (CWFM-URD-0070) & In the event that not all data can be delivered in near-real-time, priority is given to spectral bands required for active-fire detection and characterization \\ \hline \hline \end{tabular}
\end{table} 
Table 3: Primary relationships (not exhaustive) between Fire Management Functionalities (FMRs) and User Requirements from the User Requirements Document [49] (URD). FRP refers to Fire Radiative Power (e.g., [32]).