Range in FMCW Radar
| 1 | Continuously transmit a chirp signal with linearly varying frequency. | |
| 2 | A frequency difference appears between the transmitted signal and the received echo from the target. | |
| 3 | Measure this frequency difference(beat frequency) via Range FFT and convert it to distance. |
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c speed of light S chirp slope T_c chirp time/duration B_RF chirp bandwidth |
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1. Signal Flow and Processing
one target
‘
multi-target
2. Example
| Parameter | Symbol | Value | Unit | |
| Chirp Bandwidth | B_RF | 200 | MHz | |
| Chirp Up Time | T_up | 420 | us | |
| ADC Sampling Frequency | f_s | 2.5 | MHz | |
| FFT Points | N_FFT | 256 | points | |
| BIN @peak | 21 |
Radar Sensor SoC & Module
WiFi IoT Module
5G/LTE/CAT-M1/NB-IoT
WiSUN/HaLow/Thread Module
