Standard Precision Navigator/Geans Modifications for Ear Motion Compensation.
Abstract
STANDARD PRECISION NAVIGATOR/GEANS MODIFICATIONS FOR EAR MOTION COMPENSATION summarizes the technical accomplishments of the Modification Study Program for the period from the Preliminary Design Review 20-21 June 1974 through 1 January 1976. The study program included the design, brassboard fabrication, and functional testing of proposed modifications to the SPN/GEANS to meet the Electronically Agile Radar (EAR) motion compensation requirements. The design, analysis, and testing show these modifications to be feasible and readily adaptable to the SPN/GEANS. The modification to enable a SPN/GEANS to perform the EAR motion compensation requires the following hardware and software modifications: Hardware Modifications -- 1. Change the IMU isolator transmissibility to provide improved low frequency acceleration measurement capability. This will require raising the present 16 Hz isolator frequency to 40 Hz. 2. Adapt the SPN/GEANS gyro to withstand 20 g's shock. 3. Redesign the VMU Pulse Rebalance Electronics (PRE) circuitry to provide 0.00125 ft/sec/pulse delta V resolution (present resolution is 0.04 ft/sec/pulse). Two PRE boards, No. 1B and No. 2, are involved. 4. Redesign the IMU logic to accept high resolution delta V data, and provide high data rate (256 Hz) delta V and gimbal angle data transmission to the EAR Radar Data Processor. This will require design changes to one existing logic circuit board and the addition of one new board, which will increase the depth of the overall logic package. 5. Develop special test equipment to functionally check the 256 Hz data bus.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1976
- Accession Number
- ADA035033
Entities
People
- Daniel Gionet
- Paul E. Hall
- Steven Samsel
Organizations
- Honeywell International, Inc.