Experimental system and results for distributed VHF radar

To solve the shortcomings of the Very High Frequency (VHF) radar, such as wide beam-width, low angular resolution and weak transportability, we propose a novel distributed VHF radar which consists of two identical VHF digital array radars. The system scheme of the experimental system and the main functions of the subsystems are given in this paper. We also design the signal processing method for the real data of the distributed VHF radar. The results of the real data show that the beam width of the distributed array is much narrower than that of the sub-arrays. And the accuracy of the angle estimation is around 1/10 that of the sub-arrays. Therefore, the proposed system can reach a high angle estimation accuracy with a relatively low cost and high transportability.