In coastal or high-latitude regions with persistently low temperatures (below -10°C) and high salt spray corrosion, radar equipment is highly susceptible to damage. Our radar system, however, has demonstrated exceptional corrosion resistance and extreme cold tolerance in such harsh marine environments. The equipment operated continuously for over four months, enduring low-temperature condensation (minimum surface temperature of -15°C), high-concentration salt spray corrosion (salt deposition rate more than three times the normal level), and strong sea winds. During this period, its detection accuracy, electronic component stability, and structural corrosion resistance remained excellent, with no issues such as circuit aging due to salt spray, metal component rusting, or signal anomalies caused by low-temperature condensation. This fully verifies the product's reliability under extreme cold and high salt spray conditions, providing stable, all-weather technical support for critical applications such as island outposts and port security.