Design Of Digital Code Using Trellis Code to Improve Multiple Moving Target Detection in Doppler Radar

Abstract

Objective: Model the digital codes to enhance the detection of desired target in Multi-object environment. Methods: This study presents an effective mathematical model using convolution code, Trellis Code, and Quadratic Residue Technique to increases the probability of moving target detection. Findings: The proposed digital codes are efficient in detecting and tracking battle-field targets, slow-moving targets (helicopters, fighter aircraft), and fast moving ICBM (Inter-Continental Ballistic Missile). Application: The proposed approach can be used in surveillance, defense, and monitoring the weather forecast. It also provides an opportunity for researchers to improve the methodology for fast-moving targets at desired Doppler frequency. Novelty: This approach improves the merit factor (MF) of the main lobe and also reduces the amplitude of the side spikes below the threshold limit by creating multiple clear windows at various Doppler ranges. To authenticate the proposed model, a comparison between the proposed model and the existing model is presented. The work has been validated using Mat-Lab.

Enhance Auto and Cross-Correlation Properties to Detect Multiple Moving Targets in Radar using the Booths Algorithm

“…Unissa et al (9) present long binary codes to improve the performance of the auto and cross-correlation to detect high-speed targets, however, the design process of code generation is too complex which needs more time to process it and increases the delay. Bhure R K D and Manjunathachari K (10) designed a method using trills coding approach in which the authors combined the trills bits at various levels to make the stream in a standard form and later they used combinational circuitry to generate more number of bits to investigate the target detection probability. Here the presented model showed good results up to a stream of 48 bits soon after it degrades performance because delay in the designed system increases more caused by more usage of combinational circuitry.…”