Abstract: An autonomous bio-inspired mobile robotic device (200) capable of detecting, tracking and communicating location of survivor(s) (34) trapped under earthquake/building collapse debris (30, 32). The small-size, lightweight, ruggedized autonomous legged mobile robot (200) incorporates high-frequency millimeter-wave radar sensor (10) and Ultra Wideband (IR-UWB) radar sensor (12) for detecting presence and perform ranging of trapped survivor(s) (34). The autonomous mobile robot (200) also comprises GNSS (8) and BLE (4) connectivity for location tracking of trapped survivor(s) (34) in conjunction with a Wi-Fi enabled visual sensing solution (20) and a flashlight (16) to aid during rescue operation. The battery-powered (24) autonomous bio-inspired mobile robot (200) also comprises an MCU (26), actuators (14b), motor control circuitry (18) and IMU (6) to control robot (200) locomotion and perform sensor data fusion.