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Abstract-In this paper, we propose a multi-beam and multi-range (MBMR) radar with frequency modulated continuous wave (FMCW) waveform and digital beam forming (DBF) algorithm to cover a detection area of long range and narrow angle (150 m, ±10 • ) as well as short range and wide angle (60 m, ±30 • ) as a single 24 GHz sensor. The developed radar is highly integrated with multiple phased-array antennas, a two-channel transmitter and a four-channel receiver using K-band GaAs RF ICs, and back-end processing board with subspacebased DBF algorithm. The proposed 24 GHz MBMR radar can be used for an adaptive cruise control (ACC) stop-and-go system which typically consists of three radars, such as two 24 GHz short-range radars for object detection in an adjacent lane and one 77 GHz longrange radar for object detection in the center lane.

Tremendous growth in world population, giant industrialization, high four wheeler utilization, slow paced city development and mismanagement of available parking space leads towards necessity of smart four wheeler parking management system. There is a dire need for intelligent, efficient and reliable system which can be useful in searching the unoccupied parking facility, guidance towards parking along with proper management of the parking facility. The traditional parking system is used more often which has its own disadvantages like maintainability, training cost, system is dependent on human resources, time consuming, congested. This proposed system makes use of Ultrasonic sensors and to create android application for smart parking system to overcome the disadvantages of traditional system. It minimizes the human involvement and efficiently manages the empty parking slots. It provides direct user access through android application.

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For an adaptive cruise control (ACC) stop-and-go system in automotive applications, three radar sensors are needed because two 24 GHz short range radars are used for object detection in an adjacent lane, and one 77 GHz long-range radar is used for object detection in the center lane. In this letter, we propose a single sensor-based 24 GHz radar with a detection capability of up to 150 m and ±30˚ for an ACC stopand-go system. The developed radar is highly integrated with a high gain patch antenna, four channel receivers with GaAs RF ICs, and back-end processing board with subspace based digital beam forming algorithm.