Sparse IQ Figure of Merits#
The definitions below apply to any of Acconeer’s products implementing the Sparse IQ service.
Radar Loop Gain (RLG)#
Radar Loop Gain is given the formula (rearranged from signal-to-noise ratio definition):
(12)#\[\text{RLG}_{dB} = \text{SNR}_{dB} - \text{RCS}_{dB} + 40 \log_{10}(d),\]
where RLG is the radar loop gain, SNR is the signal-to-noise ratio, RCS is the radar cross-section, and \(d\) is the distance to the target with the given RCS.
Base Radar Loop Gain (Base RLG)#
Base RLG is the RLG (equivalent) for HWAAS = 1.
RLG (and SNR) scales linearly with HWAAS, meaning a 3dB increase for every doubling of HWAAS.
Radar Loop Gain per time (RLG/t)#
Measurement time is not accounted for in the RLG and Base RLG metrics. To account for it, we define the Radar Loop Gain per time (RLG/t) as
(13)#\[\text{RLG/t}_{dB}
=
(\text{RLG}_{dB}\ |\ \text{HWAAS} = 1)
- 10 \log_{10}(\tau_\text{sample})\]
where \((\text{RLG}_{dB}\ |\ \text{HWAAS} = 1)\) is the base RLG, and \(\tau_\text{sample}\) is the sample duration.